Attacks by Islamist militants cause thousands to flee Mosul  


Islamist insurgents have overrun parts of the Saddam Hussein's hometown of Tikrit, after taking control of Iraq's biggest city Mosul.

The Iraqi Prime Minister Nouri al-Maliki has urged troops to fight back against the militants as up to 500,000 people fled Mosul after the al-Qa'ida splinter group Islamic State of Iraq and the Levant (ISIS) overran the city.