16:48 19 August 2014
IS fighters have posted a video threatening to respond to US airstrikes by drowning American targets in blood. It showed a photograph of an American who was beheaded during the US occupation in Iraq. The chilling message came as fighting resumed at Mosul Dam in northern Iraq.
On Monday, US President Barack Obama announced that Kurdish peshmerga troops, who are supported by US jets, successfully recaptured an important dam.
The US president said Islamic State (IS) fighters remained "a threat to Iraq and the entire region" and said Iraqis "must reject them and unite by pushing them out of lands they have occupied".
"They claim to represent Sunni grievances but they slaughter Sunni men, women and children,” he added.
Meanwhile, David Cameron insisted that Britain would not be dragged into another war in Iraq to fight what he called “monstrous” jihadists.
"I want to be absolutely clear to you and to families watching at home. Britain is not going to get involved in another war in Iraq," the Prime Minister said in a televised address.
"We are not going to be putting boots on the ground. We are not going to be sending in the British Army."