America's plans to fight Islamic State are in ruins as the militant group's fighters come close to capturing Kobani and have inflicted a heavy defeat on the Iraqi army west of Baghdad.

The US-led air attacks launched against Islamic State (also known as Isis) on 8 August in Iraq and 23 September in Syria have not worked. President Obama's plan to "degrade and destroy" Islamic State has not even begun to achieve success. In both Syria and Iraq, Isis is expanding its control rather than contracting.

Isis reinforcements have been rushing towards Kobani in the past few days to ensure that they win a decisive victory over the Syrian Kurdish town's remaining defenders. The group is willing to take heavy casualties in street fighting and from air attacks in order to add to the string of victories it has won in the four months since its forces captured Mosul, the second-largest city in Iraq, on 10 June.