Iraq has hanged 36 men convicted over the killing of up to 1,700 military recruits at a former US base in 2014.
The massacre at Camp Speicher, near Tikrit, was carried out by fighters from so-called Islamic State (IS) as it seized territory across northern Iraq.
Outrage over the massacre of the mostly Shia cadets helped mobilise Iraq’s Shia militias in the fight against IS.
IS militants released photos and video documenting the massacre in 2014. Mass graves were found a year later. The graves were discovered when Iraqi government forces recaptured the area.(BBC,2016)