The recent defeat of Islamic State (IS) forces in the Syrian border town of Kobane has been greeted by the US-led coalition fighting the group as a significant victory.
But the killings of two Japanese civilians and a Jordanian pilot held prisoner by IS suggest it shows no sign of backing down in the face of five months of American-led airstrikes in Syria and Iraq.
So how much progress has the military offensive against IS made?
The defeat of IS at Kobane was achieved by a combination of Syrian and Iraqi Kurdish fighters on the ground supported by more than 700 air strikes which have flattened much of the town.
This success supports the view of many analysts that to defeat Islamic State, air strikes alone are not enough and ground forces are essential if the organisation’s territorial gains are to be rolled back.
The size of the challenge this presents is made stark by the assessment of informed observers that contrary to what President Obama told Congress in his State of the Union speech last month, since the campaign against IS began last August, the Islamist fighters have in fact doubled the amount of territory they control, especially in eastern Syria.
IS has also succeeded in gained allies beyond Syria and Iraq. In the past few weeks, Islamists in Egypt and Libya, who have affiliated themselves to Islamic State, have carried out large scale attacks. The group is also reported to be establishing links with the Pakistani Taliban.
Following the taking of Kobane, the US-led coalition, which includes the air forces of several western and Arab states, as well as the Iraqi army and Kurdish Peshmerga fighters, is turning its sights on the Iraqi city of Mosul.
It was the fall of Mosul to IS last June that galvanised Washington to intervene again in the region following the withdrawal of American forces from Iraq at the end of 2011.
If Mosul can be recaptured, it would represent a much bigger blow to IS than Kobane, which it had never fully controlled. But Mosul is a much tougher proposition.
IS has consolidated its control of the city – Iraq’s second largest – and the remaining population is largely Sunni Arab, many of whom may prefer the rule, however harsh, of IS to the return of rule by the Shia-dominated government in Baghdad, despite the efforts of the new Iraqi Prime Minister, Haidar al Abadi, to reach out to disaffected Shias.
It is also unclear whether the Iraqi army, which collapsed in the face of the IS offensive last summer, is yet in a fit state to launch a large-scale ground offensive against Mosul.
The Americans and other western countries, including Britain, have been training and rearming Iraqi forces, but the corruption that is blamed for their cave-in to IS will take time to root out, if indeed it can be.
The lack of an ally with powerful enough ground forces is even more acute in Syria. (more…)