MOSCOW—Russian President Vladimir Putin on Jan. 11 hosted his counterparts from Armenia and Azerbaijan to discuss reopening transport routes in the region that have been paralyzed for nearly three decades amid a conflict over Nagorno-Karabakh. The talks came two months after a Russia-brokered truce ended weeks of fierce fighting between Armenian and Azerbaijani forces that left more than 6,000 people dead. Greeting Azerbaijani President Ilham Aliyev and Armenian Prime Minister Nikol Pashinyan in the Kremlin, Putin said that the peace agreement has been successfully implemented, “creating the necessary basis for a long-term and full-format settlement of the old conflict.” The Nov. 10 peace deal ended 44 days of hostilities in which the Azerbaijani army routed Armenian forces and reclaimed control over large parts of Nagorno-Karabakh and surrounding areas. Nagorno-Karabakh lies within Azerbaijan but had been under the control of ethnic Armenian forces backed by Armenia since a separatist war there …