The death toll from a Ukrainian drone strike on a college dormitory building in Starobilsk, a city in Ukraine’s Russian-occupied Luhansk region, has risen to six, while 15 people remain missing, Russian President Vladimir Putin said Friday. According to the local health minister, 40 people were injured in the attack. Speaking at a meeting with war veterans in Moscow, Putin denounced the attack on the dormitory as a “crime” and ordered the military to submit its proposals for retaliation.