At least seven people have been wounded following a knife attack in the city of Surgut, in central Russia, with police shooting the attacker dead.
At least 12 people have been killed, and a hospital severely damaged, following Syrian or Russian airstrikes in the rebel-held Idlib province of Syria.
At least two people.
At least 10 people have been killed, and more than 50 wounded, following explosions on two train carriages at metro stations in the Russian city of St. Petersburg.
At least 16 people have been killed, following an airstrike on a prison in the rebel-held Idlib province, in Syria.
A former Russian MP, who had fled to Ukraine last year, has been shot dead outside his hotel in the Ukrainian capital, Kiev.
At least 40 Iraqi citizens have been killed, and more than 120 wounded, following a twin bomb attack in the Syrian capital, Damascus, Iraq’s government has said.
At least three Turkish soldiers have been accidentally killed, and a further 11 wounded, by Russian airstrikes against Islamic State in northern Syria.
A senior commander among pro-Russian rebel forces in eastern Ukraine has reportedly been killed in a car bomb attack in the eastern city of Luhansk.
At least nine people have reportedly been injured, and the suspected gunman detained, following a shooting at an airport in the US state of Florida.