German authorities have arrested two Syrian nationals who were allegedly members of the extremist Nusra Front, with one of them accused of war crimes involving the murder of dozens of civilians.

UN Secretary-General Ban Ki-moon has called on the Security Council to refer the situation in Syria to the International Criminal Court for investigation of possible war crimes.

At least 23 civilians were killed in renewed government airstrikes on the contested city of Aleppo as the United Nations Security Council convened an emergency meeting on the spiralling violence in Syria.

Islamic State is committing genocide and other war crimes against the Yazidi community in Iraq and Syria, a UN investigative panel on Syria said as it urged countries to do more to stop it.

A judge has declared Chad's former dictator Hissene Habre guilty and sentenced him to life in prison for crimes against humanity, war crimes and torture.

Sri Lankan state forces and Tamil Tiger rebels “most likely” committed war crimes including mass killings of civilians during their conflict that should be prosecuted by a special court with international judges, the United Nations said.

Amnesty says warplanes have left ‘bloody trail of civilian death’.

UN investigators said Israel and Palestinian militant groups abused international humanitarian law during the 2014 Gaza conflict, and this may be tantamount to war crimes.

A United Nations report into the 2014 Gaza war has found that Israel and the Palestinians may have committed war crimes.