An Islamic State fighter on a tank
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Islamic State crisis: Fierce fighting close to Baghdad

There has been fierce fighting to the west of the Iraqi capital, Baghdad, as government troops battle Islamic State militants.

The militants have been held off with the help of US-led air strikes, however the insurgents have not retreated and some are less than 10km (six miles) from the city.

Meanwhile, President Obama has acknowledged that US intelligence agencies underestimated the threat posed by Islamic State extremists in Syria, and overestimated the capabilities of the Iraqi army.

Christian Fraser reports.

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