11 detained after Moscow concert hall attack; 115 dead

Russian authorities detained 11 people after gunmen attacked a Moscow concert hall, leaving 115 dead. Four suspects were directly involved, planning to cross into Ukraine. The Islamic State claimed responsibility, but Russian agencies linked the attack to Ukraine. Putin, recently re-elected, condemned Western warnings of attacks. The UN Security Council and Secretary-General condemned the act. In response, hundreds in Moscow donated blood. Islamic State previously downed a Russian plane in 2015.