TOPSHOTS Iraqi Kurdish actors perform in a play on March 16, 2015 in Arbil, the capital of the Kurdish autonomous region in Northern Iraq, in memory of the victims of a gas attack by former Iraqi president Saddam Hussein in 1988 in the Kurdish town of Halabja 300 kms (190 miles) northeast of Baghdad. Some 5,000 civilians, mostly women and children, were killed in the chemical gas attack by Saddam Hussein's airforce as part of a campaign to crush a Kurdish rebellion. AFP PHOTO / SAFIN HAMED