Armenian Prime Minister Nikol Pashinyan has announced he had signed an “unspeakably painful agreement” with Russia and Azerbaijan to end the war over the disputed region of Nagorno-Karabakh.

Pashinyan said the agreement would take effect from 1 am on Tuesday (21:00 GMT on Monday) to end a conflict that has left at least 1,000 people dead.

“I have made a difficult, extremely difficult decision for personally me and all of us. I have signed a declaration with the Presidents of Russia and Azerbaijan on stopping the war starting from 01:00 (local time),” Pashinyan said in a statement posted on his Facebook page.

Russian President Vladimir Putin said Russian peacekeeping forces will be deployed along the contact line in Nagorno-Karabakh. He said the ceasefire deal stipulates the exchange of prisoners of war and bodies, according to TASS.