Not even the military thinks landmines are a “vital tool”. Mark Perry reports on what is really behind Trump’s dangerous and unnecessary reversal on landmines.

Was the U.S. wrong about the attack that almost started war with Iran? Alissa Rubin reports on the claims of Iraqi military and intelligence officials that believe ISIS was more likely to have been responsible for the attack that killed an American contractor at an Iraqi base at the end of last year.

Extend New START. Caroline Dorminey and Sumaya Malas make the case for extending the treaty as its last year in effect begins.