US warplanes attacked Islamic State targets in Syria overnight, in raids that a group monitoring the war said killed civilians as well as jihadist fighters.
The British-based Syrian Observatory for Human Rights said the strikes hit mills and grain storage areas in the northern Syrian town of Manbij, in an area controlled by Islamic State, killing at least two civilian workers.
Strikes on a building on a road leading out of the town also killed a number of Islamic State fighters, said Rami Abdulrahman, who runs the observatory, which gathers information from sources in Syria.
The US military said yesterday an American air strike targeted Islamic State vehicles in a staging area adjacent to a grain storage facility near Manbij, but it had no evidence so far of civilian casualties.
While raids in Iraq and Syria have taken a toll on Islamic State equipment and fighters on the ground, there is no sign the tide is turning against the group, which controls large areas of both countries.
A US Air Force general said Islamic State militants were changing their tactics in the face of American air strikes in Iraq and Syria, abandoning large formations such as convoys that had been easier for the US military to target.
“They are a smart adversary, and they have seen that that’s not effective for their survival, so they are now dispersing themselves,” Air Force Major General Jeffrey Harrigian said at a Pentagon news conference.That “requires us to work harder to locate them, and then develop the situation to appropriately target them”, he said.
In a statement to the United Nations that appeared to give approval of US and Arab air strikes in Syria against the militants, Syria's foreign minister said his country backed the campaign against Islamic State.
Syria “stands with any international effort aimed at fighting and combating terrorism”, said Walid al-Moualem, whose government has long been an international pariah because of what critics say is its brutality in a civil war that has killed 190,000 people.
US congressional aides said Congress might not vote until next year on an authorization for president Barack Obama's air strikes against Islamic State militants in Iraq and Syria, despite some lawmakers' insistence that approval is already overdue.
Mr Obama has said he does not need approval for the air strikes, despite the constitutional requirement that Congress authorize military action.
The US-led strikes have so far failed to halt an advance by Islamic State fighters in northern Syria on Kobani, a Kurdish town on the border with Turkey where fighting over the past week caused the fastest refugee flight of Syria's three-year-old war.
At least 15 Turkish tanks could be seen at the frontier, some with guns pointed towards Syrian territory. More tanks and armoured vehicles moved towards the border after shells landed in Turkey on Sunday and Monday.
The United States has been bombing Islamic State and other groups in Syria for a week with the help of Arab allies, and hitting targets in neighbouring Iraq since last month. European countries have joined the campaign in Iraq but not in Syria.
Islamic State, a Sunni militant group that broke off from al Qaeda, alarmed the West and the Middle East by sweeping through northern Iraq in June, slaughtering prisoners and ordering Shia and non-Muslims to convert or die.
It is battling Shia-backed governments in both Iraq and Syria, as well as other Sunni groups in Syria and Kurdish groups in both countries, part of complex multi-sided civil wars in which nearly every country in the Middle East has a stake.
The head of Syria’s al Qaeda branch, the Nusra Front, a Sunni militant group that is a rival of Islamic State and has also been targeted by US strikes, said Islamists would carry out attacks on the West in retaliation for the campaign.
Mr Obama has worked since August to build an international coalition to combat the fighters, describing them last week in an address to the United Nations as a “network of death”.
Reuters