US troops are greeted as they arrive in Kuwait
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Last US troops leave Iraq over Kuwait border

The final contingent US troops have withdrawn from Iraq, bringing Operation New Dawn to a close.

Vehicles carrying the last troops crossed the border into Kuwait on Sunday morning.

At the peak, there were 170,000 US troops in Iraq and more than 500 bases. The Iraqi police and army will now be responsible for security in their country.

The BBC's Wendy Urquhart reports.

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