The United States (US) Defence Secretary announced on 11 July that 560 additional troops would be deployed to the Qayara air base, Iraq. Moqtada al-Sadr, the Shi’ite Muslim cleric, instructed his followers through his website to target US troops. The Iraqi Prime Minister fired three officials in charge of Baghdad’s security following the truck bomb on 3 July. On 28 July, the US military announced that it had killed 14 civilians in Iraq and Syria in six airstrikes between 28 July 2015 and 29 April this year. On 3 July, Iraqi security services were ordered to stop using fake bomb detectors by the Iraqi Prime Minister following the truck bomb attack. On 25 July, a suicide car bombing, claimed by the Islamic State (IS) killed 16 people outside Khalis, with a further five civilians killed during an attack on two energy facilities. On 7 July, three suicide bombers killed at least 35 people and wounded a further 60 near the Mausoleum of Sayid Mohammed bin Ali al-Hadi, near Balad. IS claimed responsibility for a truck bomb attack on 3 July in Baghdad that killed 292 people and injured a further 200. On 1 July, a spokesman for the Pentagon announced that a US-led coalition airstrike on 25 June killed two senior IS military commanders. On 7 July, the International Monetary Fund (IMF) stated that its executive board approved a new standby arrangement for Iraq. On 18 July, the United Nations (UN) announced that the humanitarian situation caused by the upcoming operation against Mosul could cost up to $1.8 billion.