YEREVAN/BAKU (Reuters) - Russian peacekeeping troops deployed to the war-ravaged enclave of Nagorno-Karabakh in the early hours of Tuesday as part of a ceasefire deal President Vladimir Putin said should pave the way for a lasting political settlement of the conflict there.The deal, agreed by Armenia, Azerbaijan and Russia, ushered in a full ceasefire from midnight Moscow time on Nov. 10, freezing a conflict that has killed thousands, displaced many more and threatened to plunge the wider region into war. The territory is internationally recognised as part of Azerbaijan but populated and, until recently, fully controlled by ethnic Armenians who have been relentlessly pushed back by the armed forces of Azerbaijan in six weeks of heavy fighting. Under the deal, Azerbaijan will get to keep all of its territorial gains, including the enclave’s second city of Shusha/Shushi, and ethnic Armenian forces must hand over control of a slew of other territories between now and Dec. 1. Russian peacekeepers will stay in place for at least five years. Putin said they would be deployed along the frontline in Nagorno-Karabakh and in a corridor between the region and Armenia. The Russian defence ministry said it had started deploying 1,960 servicemen, who were en route to an unnamed air base to be airlifted along with their equipment and vehicles.