Tensions remained high in the eastern Ukrainian city of Slovyansk on April 21, after a weekend attack on a checkpoint by gunmen saw three people killed, including two attackers. The incident occurred amid a tentative Easter truce. Russia and Ukraine traded accusations regarding who was behind the attack.

This footage, taken in Slovyansk on April 21, shows pro-Russia activists driving a tank through the city with a Russian flag flying from the vehicle. A pro-Russia activist group remains in control of some government buildings in the city. The self-declared mayor of Slovyansk appealed to Russian President Vladimir Putin to send Russian peacekeepers to the region. Credit: Graham Phillips