Russia is threatening military intervention if Azerbaijan refuses to enjoin a lasting cease fire in its ongoing conflict with Armenia. In a statement, the Russian foreign ministry warned that “Russia will render [Armenia] all necessary assistance if clashes take place directly on [its] territory.”

Centered on the disputed territory of Nagorno-Karabakh, the conflict has been raging since late September. Until now, however, Russia has played a passive role. Vladimir Putin’s government has sought to broker a durable cease fire, even cooperating with the European Union and Washington in that pursuit. Unfortunately, none of these ceasefires has held for more than a few hours. Russia’s new announcement is designed to alter that equation, with particular focus on Turkey.