Middle East allies accuse Barack Obama and David Cameron of failing to show strategic leadership in fight against Isil, as MPs could be given vote on whether to bomb Syria.
The United States has blocked attempts by its Middle East allies to fly heavy weapons directly to the Kurds fighting Islamic State jihadists in Iraq, The Telegraph has learnt.
Some of America’s closest allies say President Barack Obama and other Western leaders, including David Cameron, are failing to show strategic leadership over the world’s gravest security crisis for decades.
They now say they are willing to “go it alone” in supplying heavy weapons to the Kurds, even if means defying the Iraqi authorities and their American backers, who demand all weapons be channelled through Baghdad.
High level officials from Gulf and other states have told this newspaper that all attempts to persuade Mr Obama of the need to arm the Kurds directly as part of more vigorous plans to take on Islamic State of Iraq and the Levant (Isil) have failed. The Senate voted down one attempt by supporters of the Kurdish cause last month.
The officials say they are looking at new ways to take the fight to Isil without seeking US approval.
But they are doing so with a makeshift armoury. Millions of pounds-worth of weapons have been bought by a number of European countries to arm the Kurds, but American commanders, who are overseeing all military operations against Isil, are blocking the arms transfers.
One of the core complaints of the Kurds is that the Iraqi army has abandoned so many weapons in the face of Isil attack, the Peshmerga are fighting modern American weaponry with out-of-date Soviet equipment.
At least one Arab state is understood to be considering arming the Peshmerga directly, despite US opposition.
The US has also infuriated its allies, particularly Saudi Arabia, Jordan and the Gulf states, by what they perceive to be a lack of clear purpose and vacillation in how they conduct the bombing campaign. Other members of the coalition say they have identified clear Isil targets but then been blocked by US veto from firing at them.
“There is simply no strategic approach,” one senior Gulf official said. “There is a lack of coordination in selecting targets, and there is no overall plan for defeating Isil.”