One week of terrorist attacks in Moscow suburbs: Russia strengthens claims of involvement in Ukraine. The terrorist attack that occurred on the 22nd at a concert hall on the outskirts of Russia's capital, Moscow, left 143 people dead.

Four people have been charged so far as the perpetrators, and the Amaq News Agency, which has ties to the extremist group IS (Islamic State), reports that the attack was carried out by IS fighters. On the 28th, one week after the attack, IS posted on social media praising the crime.