WATCH FULL VIDEO: https://www.youtube.com/watch?v=aJ1VcslHV1I President Joe Biden on Friday defended what he said was a “difficult decision” to provide cluster munitions to Ukraine, a move the administration said was key to the fight and buttressed by Ukraine’s promise to use the controversial bombs carefully. The decision comes on the eve of the NATO summit in Lithuania, where Biden is likely to face questions from allies on why the U.S. would send a weapon into Ukraine that more than two-thirds of alliance members have banned because it has a track record for causing many civilian casualties.