Pentagon says it has formally completed withdrawal of US troops from Iraq

Twelve years after US mission against IS began, Trump hails great day for America' and calls war a quagmire'

The Pentagon has announced it has formally completed its withdrawal of US troops from Iraq, two years after the withdrawal was agreed to and 12 years since the US mission to fight the Islamic State started.

After the announcement, Iran and its allies celebrated the departure as a victory, while Iraqi security experts worry that the withdrawal could give IS and others a chance to recover.