The Iraqi prime minister and the leader of the Kurdistan Regional Government met to discuss territory and the preparation for the battle to dislodge the Islamic State (IS) from Mosul. On 30 September the French defence minister announced that the government-led offensive to retake Mosul would begin soon. On 29 September a United States (US) military spokesman announced that air strikes by the US and its allies had killed 18 IS leaders in the past 30 days. On 28 September US and Iraqi officials announced that 615 new US troops would be sent to Iraq to assist in the operation to retake Mosul. On 21 September a US military official announced that the military is testing material retrieved from an IS rocket attack in Iraq to see if a chemical agent had been used. On 24 September, 18 people died in an IS attack on a checkpoint north of Tikrit. On 28 September the World Food Programme (WFP) announced that food aid had reached civilians in Shirqat, northern Iraq. IS militants lost control of their last oil wells following the recapture of Shirqat by the Iraqi military, the oil ministry announced on 28 September. On 21 September the Iraqi parliament passed a motion of no-confidence against Finance Minister Hoshiyar Zebari. On 14 September the US announced that it was giving Iraq $181 million in humanitarian aid ahead of the operation against Mosul.