More than 130 people were killed in an attack on a concert hall in Moscow on Friday. The Islamic State claimed responsibility for the attack.
The Russian secret service has reported the arrest of 11 people, all foreigners, including four who “directly participated” in the Crocus City attack. Russia has a long history of terrorist attacks, which shook the country after the collapse of the Soviet Union and during the first years of Vladimir Putin's rule. In 2004, a group of Chechen terrorists took 1,200 hostages at a school in the city of Beslan; 334 people died.