NATO allies and defense officials have expressed bewilderment at U.S. President Donald Trump’s announcement that he would send 5,000 U.S. troops to Poland.

Secretary of State Marco Rubio already faced a difficult task in soothing NATO allies anxious about President Donald Trump's often-abrupt announcements.

Ukrainian drones have recently caused concern by entering Baltic airspace, leading to tensions with NATO countries.

Montenegro marks 20 years of independence from a union with Serbia this week, celebrating a two-decade transformation that has already brought the Balkan country into NATO.

Lithuania's president and prime minister have been taken to safe locations after a suspected drone was detected near the country's border with Belarus.

Secretary of State Marco Rubio will travel this week to a NATO foreign ministers meeting in Sweden, where U.S. plans to reduce troop levels in Europe coupled with President Donald Trump’s often inconsistent stance on the alliance have created concern.

NATO’s top military officer says he doesn’t expect any more drawdowns of American troops from Europe — at least not anytime soon — beyond the 5,000 that U.S. President Donald Trump announced would leave the continent.

Authorities say a NATO fighter jet shot down a Ukrainian drone over southern Estonia.

The Pentagon is drawing down thousands of troops in Europe by stopping units from deploying to Poland and Germany as opposed to yanking those already stationed there.

European leaders say President Donald Trump's decision to withdraw U.S. troops from Germany is just the latest signal that Europe must take more responsibility for its security.

The Pentagon says the United States will withdraw about 5,000 troops from Germany in the next six to 12 months.

U.S. President Donald Trump has renewed an old threat that Washington could reduce its military presence in Germany.

Spanish Prime Minister Pedro Sánchez is declining to engage in a dispute with the U.S. over reports that the Pentagon is considering punishing NATO members who don't support U.S. operations in the Iran war.

In Baltic skies, there's a regular ballet of posturing between pilots from NATO nations and Russia.

Spanish Prime Minister Pedro Sánchez has hosted two events in Barcelona to rally progressive leaders from around the world who fear for a rules-based world order.

President Donald Trump repeated his complaint about NATO after a private meeting with the alliance's Secretary-General Mark Rutte on Wednesday.

Britain has accused Iran of holding the global economy hostage as diplomats from over 40 countries discuss reopening the Strait of Hormuz.

U.S. President Donald Trump says he’s strongly considering pulling the United States out of NATO, yet he failed to mention the alliance in his speech to the American public about the Iran war.

U.S. President Donald Trump’s prime-time address at 9 p.m. EDT offers an update on the progress made toward achieving his goals in the war with Iran, which are to destroy the country’s missile production and Navy, ensure its proxies can no longer destabilize the region and guarantee Iran does not obtain a nuclear weapon.

Spain has closed its airspace to U.S. planes involved in the Iran war after earlier saying the U.S. couldn't use jointly operated military bases there for operations related to the conflict.

President Donald Trump says NATO and other allies have rejected his calls to help secure the Strait of Hormuz.

Five big European military powers have launched a joint effort to build cheap drone defenses and autonomous drones, using Ukraine’s battlefield expertise.

European allies at NATO are brushing aside concerns that the United States has stepped back from its leadership role at the alliance.

NATO has launched a new military effort called Arctic Sentry to boost security in the High North.

A senior European intelligence chief says Russia cannot launch an attack on NATO this year or next but is planning to increase its forces significantly along the alliance’s eastern flank, depending on the outcome of the war in Ukraine.

Ukrainian President Volodymyr Zelenskyy says Russia breached its commitment to hold off on energy infrastructure attacks for a week when it launched a major assault on Ukraine overnight.

NATO Secretary-General Mark Rutte insists Europe cannot defend itself without U.S. military support.

The U.S. is taking a minority stake in an Oklahoma rare earth miner, the latest government investment in the sector as it seeks to minimize its reliance on imports of a material used prevalently in smartphones, robotics, electric vehicles and many other high tech products.

A senior French official has emphasized the importance of honoring French soldiers who died in Afghanistan.

President Donald Trump has revoked an invitation to Canadian Prime Minister Mark Carney to join his Board of Peace.

British Prime Minister Keir Starmer has signaled that U.S. President Donald Trump to apologize for his false assertion that troops from NATO countries — other than Americans — stayed away from the front line during the war in Afghanistan.

Leader of Denmark and its semiautonomous territory Greenland are insisting that the island's sovereignty is non-negotiable after U.S. President Donald Trump said he agreed to a framework on Arctic security with the head of NATO.

U.S. President Donald Trump has decided to drop his threat of imposing tariffs on several European countries.

President Donald Trump has announced he is canceling a planned tariff on U.S. allies in Europe over Greenland.

President Donald Trump closed out 2025 with his plan to end the Israel-Hamas war in fine fettle.

President Donald Trump meandered through a list of his administration’s accomplishments while speaking at a White House press briefing Tuesday.

President Donald Trump says he'll impose a 10% import tax starting in February on goods from eight European nations because of their opposition to American control of Greenland.

Troops from European countries, including France and Germany, are arriving in Greenland to boost security.

The leaders of Denmark and the country’s territory of Greenland on Tuesday offered a united front against President Donald Trump’s calls for the United States to take over the strategic Arctic island.

U.S. President Donald Trump's repeated threats to take control of Greenland are straining relations with NATO allies.

A bipartisan U.S. congressional delegation is headed to Copenhagen later this week to show unity with Denmark amid tensions over Greenland.

Britain is discussing with NATO allies how to enhance Arctic security against Russia and China.

U.S. President Donald Trump’s latest threats against Greenland pose a new and potentially unprecedented challenge to NATO, perhaps even an existential one.

A Danish intelligence agency report has warned that the United States is using its economic power to assert its will and threaten military force against both allies and adversaries.

NATO Secretary-General Mark Rutte brushed off fresh concern about the United States’ commitment to the military organization on the eve of a meeting of allied foreign ministers focused on Russia’s war against Ukraine.

An American proposal to end the war in Ukraine puts the country in a delicate diplomatic position — caught between placating its most important ally, the United States, and not capitulating to Russia, its much larger neighbor that launched a full-scale invasion nearly four years ago.

Greece has showcased a wide range of domestically developed drones and counter-drone tools during a military exercise that highlighted a NATO-wide push to modernize the armed forces and lean on startup driven innovation.

Drone warfare exploded following Russia’s full-scale invasion of Ukraine in 2022.

Thousands of protesters in Serbia have formed a human shield around a bombed-out military complex, vowing to protect it from redevelopment.

Poland and Romania are deploying a new weapons system to defend against Russian drones.

The U.S. confirms it will reduce its troop presence on NATO’s borders with Ukraine.

The Pentagon says Defense Secretary Pete Hegseth’s plane made an unscheduled landing in the United Kingdom because a windshield cracked on a flight back to the U.S. from a NATO meeting and all aboard are safe.

Germany plans to send more than $2 billion in military aid to Ukraine amid concerns about dwindling Western support.

NATO has announced that its major annual nuclear exercise, "Steadfast Noon," is starting next week.

Donald Trump and Vladimir Putin have been trading barbs using the term "paper tiger," a phrase popularized by the Chinese communist leader Mao Zedong.

Russian President Vladimir Putin has warned the United States that supplies of long-range missiles to Ukraine will seriously damage relations between Moscow and Washington but will not change the situation on the battlefield.

NATO is ramping up aerial surveillance in the Baltic Sea.

Russia’s top diplomat is insisting to world leaders that Russia has no intention of attacking Europe.

Intrusions into NATO’s airspace blamed on Russia have reached an unprecedented scale, raising questions about whether the Kremlin is trying to test the alliance’s willingness to respond to a direct attack or divert its attention and resources from the war in Ukraine.

The U.S. military says fighter jets have intercepted Russian warplanes near Alaska again.

Estonia is extending a fence along its border with Russia and building anti-tank ditches and bunkers in preparation for a potential conflict with Moscow.

President Donald Trump says he believes Ukraine can win back all territory lost to Russia.

A senior Estonian military official said Russian pilots ignored signals from Italian jets during a 12-minute violation of Estonian airspace.

Estonia has summoned a Russian diplomat to protest after three Russian fighter jets entered its airspace without permission.

Denmark is leading a military exercise with hundreds of troops from several European NATO members in Greenland.

A swarm of Russian drones flew last week into Poland in what officials there regarded as a deliberate provocation.

A Turkish court is expected to rule on whether to annul an internal leadership election of the country’s main opposition party over alleged irregularities.

Authorities say Polish and allied aircraft were deployed in a “preventive” operation in Poland’s airspace because of a threat of drone strikes in neighboring areas of Ukraine.

President Donald Trump says he believes the Russian-Ukraine war would end if all NATO countries stopped buying oil from Russia and placed tariffs on China of 50% to 100% for its purchases of Russian petroleum.

In the years since Russia invaded Ukraine, NATO has focused on defending its own territory first and resisted lower-level harassment from Russia, like acts of sabotage and intimidation.

NATO says it's bulking up its defensive posture on its eastern flank bordering Belarus, Russia and Ukraine with new equipment.

For more than three years, Ukraine has been battling Russian attack drones.

European leaders have expressed alarm over growing Russian hostility threatening their countries as Moscow’s forces pursue their invasion of Ukraine, concerns exacerbated after multiple Russian drones struck Polish soil.

President Donald Trump has offered an ambiguous initial response to Russia’s drone incursion into Poland’s airspace.

Multiple Russian drones crossed into Poland in what European officials described as a deliberate provocation, causing NATO to send fighter jets to shoot them down.

Confusion has emerged over Trump administration plans to halt some security assistance funding to European countries along the border with Russia.

Bulgarian authorities aren't investigating a suspected Russian interference operation involving a plane carrying European Commission President Ursula von der Leyen because they say the interference is now common.

NATO is working to counter Russian jamming of satellite navigation systems on civilian flights, according to the alliance's chief.

Finland's air force is moving to remove swastikas from its flags, partly due to the awkwardness it creates with Western allies.

NATO defense chiefs have discussed potential security guarantees for Ukraine to help end Russia's three-year war.

The second Oval Office meeting in six months between U.S. President Donald Trump and Ukrainian President Volodymyr Zelenskyy went off smoothly, in sharp contrast to their disastrous encounter in February.

European and NATO leaders will join President Volodymyr Zelenskyy in Washington for talks with President Donald Trump on ending Russia’s war in Ukraine.

Ukraine and its European backers are seeking talks with U.S. President Donald Trump in an effort to protect their security interests ahead of his summit with Russian President Vladimir Putin later this week.

NATO has started coordinating regular deliveries of large weapons packages to Ukraine, most bought from the U.S. Sweden said Tuesday that it would work with neighbors Denmark and Norway to provide $500 million worth of air defenses, anti-tank weapons, ammunition and spare parts.

The EU-U.S. tariff agreement sealed over the weekend has been described as a “dark day” for Europe and even a capitulation to American demands.

Turkey and Britain have signed a preliminary deal for the sale of Eurofighter Typhoon jets to Turkey.

Russia has launched one of its largest aerial assaults on Ukraine in months, targeting Kyiv overnight into Monday.

President Donald Trump is downplaying the possibility of sending Ukraine long-range weapons as Kyiv awaits an injection of U.S. weaponry that it hopes will help it beat back an intensifying Russian air offensive.

President Donald Trump has endorsed a plan for European allies to buy U.S. military equipment for Ukraine.

The Supreme Court is allowing President Donald Trump to put his plan to dismantle the Education Department back on track and go through with laying off nearly 1,400 employees.

NATO Secretary-General Mark Rutte is set to meet President Donald Trump this week on the heels of the U.S. leader announcing plans to sell NATO allies weaponry that they can then pass on to Ukraine.

President Donald Trump says the United States is selling weapons to its NATO allies in Europe so they can provide them to Ukraine as it struggles to fend off a recent escalation in Russia’s drone and missile attacks.

Danish Prime Minister Mette Frederiksen says Russia could pose a security threat to the European Union by the end of the decade and that defense industries in Europe and Ukraine must be ramped up.

World leaders are adapting strategies to manage U.S. President Donald Trump during his second term.

European Union leaders are calling for greater efforts to help meet Ukraine’s pressing military needs.

NATO’s summit in the Netherlands has been described as “transformational” and “historic.”.

President Donald Trump is insisting that U.S. strikes delivered a crushing blow to Iran’s nuclear program.

The U.K. says it will buy 12 U.S.-made F-35A fighter jets capable of carrying nuclear bombs and join NATO’s shared airborne nuclear mission.

President Donald Trump is insisting U.S. strikes delivered a crushing blow to Iran’s nuclear program.

NATO leaders have agreed on a massive hike in defense spending after pressure from U.S. President Donald Trump and expressed their “ironclad commitment” to come to each other’s aid if attacked.