Strikes ramp up between US and Iran

The U.S. and Iran strikes have ramped up -- after Iran struck another commercial ship in the Strait of Hormuz. The Pentagon says the U.S. hit more than 100 targets while Iran's neighbors this morning say they've shot down missiles launched at American targets in the region. Now Iran is threatening not to hold up its end of the Memorandum of Understanding reached by the two sides weeks ago, if the U.S. doesn't uphold its commitments. CBS News' Bradley Blackburn has more from New York.