Isis fighters surround Syria Kurdish town

Militias plead for help from Turkish Kurds

For or against Isis, Iran must choose

Tehran will show its colours in its attitude to the caliphate it helped build, says Frederic Hof

Iraq PM rules out foreign ground troops

US insists its forces will not have new combat mission

Syrian Kurds eye greater role in Isis fight

YPG believed to be affiliated with blacklisted terrorist group

US hints at ground troops for Isis fight

General says US military could join Iraqi soldiers in battle

Ground crew for U.S. Marine F18's goes through the final process of arming the aircraft prior to their missions over Iraq March 22, 2003. The United States and Britain unleashed their first daylight air strikes on Baghdad on Saturday after pounding it with a fearsome night blitz. - RTXLUSQ

US jets strike Isis to help Iraqi military

First attacks in direct support of Baghdad’s troops

Think Lebanon not D-Day in Isis campaign

Insurgents can take comfort in the divisions plaguing its enemies

No 10 corrects Hammond gaffe on Syria

Foreign secretary ruled out any action despite US move

Doubts raised on US use of Somali strategy

Regional experts sceptical that policy can work in Iraq and Syria

Cautious Iraqi welcome for US intervention

Sunnis and Shias warn air strikes can only operate in certain areas

Obama’s ambition at odds with his caution

US president may lack means to achieve goal of ‘destroying’ Isis

Obama readies US for ‘relentless’ Isis war

Arabs sceptical of US efforts in Iraq

Efforts to build anti-Isis coalition runs into well of mistrust

Players in the regional drama

How Saudi Arabia, the UAE, Turkey, Jordan and the Arab League have reacted to the growing Islamist threat

Mistrust follows rush to form Iraq cabinet

Semi-autonomous Kurdistan region has already threatened to withdraw

Isis threat to crucial dam contained

US widens air strikes in first direct support of Baghdad

Obama prepares to set out Isis strategy

US ready for long-term effort to defeat militants

Hurdles obstruct US strategy on Isis

Failure to consider political realities and Isis agility

Obama pledges to ‘take fight to Isis’

UK closer to military action against Isis

Nod from No 10 predicted but spectre of abortive Syria vote lingers