Nearly 2,000 Russian peacekeeping forces were deployed to the disputed region of Nagorno-Karabakh on Tuesday after a cease-fire deal reached overnight allowed Azerbaijan to hold on to the substantial territory it has regained in six weeks of heavy fighting. Russian President Vladimir Putin said the trilateral agreement among Azerbaijan, Armenia and Russia should halt fighting in the long term. Russia’s Foreign Ministry said Turkey, which has sided with Azerbaijan, backs the cease-fire deal. Previous efforts to end the latest fighting have unraveled. But the addition of Russian peacekeepers introduces major deterrents in the more than three-decade-old conflict over Nagorno-Karabakh, an enclave controlled by ethnic Armenians but inside the internationally recognized borders […]