A bitter territorial dispute between Armenia and Azerbaijan is eroding Russia’s ties with a traditional ally, a crisis that could strengthen the American relationship with an erstwhile Kremlin client and possibly increase friction between the United States and its wayward NATO partner,

Thousands of refugees from Nagorno-Karabakh streamed into Armenia Monday as a deadly blast rocked a fuel depot in the rebel enclave and Azerbaijan and ally Turkey hailed

The exodus began late Sunday, a trickle of vehicles that soon turned into an unceasing stream flowing along the mountain highway above Nagorno-Karabakh toward the Armenian border. By early Monday, almost a week after the Azerbaijani military took back Nagorno-Karabakh in a 24-hour blitz,

Armenia’s prime minister has called his country’s security relationships “ineffective,” in a swipe at Russia after Azerbaijan claimed the breakaway province of Nagorno-Karabakh following a swift military campaign.

Senior U.S. officials arrived in Armenia on Monday after neighboring Azerbaijan launched a full-scale military assault last week in the mountainous Nagorno-Karabakh region and forced the

The Nagorno-Karabakh leadership said the region's 120,000 Armenians did not want to live as part of Azerbaijan for fear of persecution and ethnic cleansing. Those with fuel started to drive down the Lachin corridor.

The first refugees from Nagorno-Karabakh have arrived in Armenia after Azerbaijan conducted a lightning military offensive there, reclaiming full control of it as the result.