Several soldiers have been killed in clashes between Azerbaijani troops and ethnic Armenian forces answering to the de facto authorities in Nagorno-Karabakh, raising fears of escalation.

Azerbaijan says the only deal it wants is one that begins with unequivocal acceptance by Armenia of Baku’s sovereignty over all territory within its internationally recognised borders, including the whole of Nagorno-Karabakh. Armenia and the de facto authorities want special security provisions and rights for Nagorno-Karabakh Armenians.

Crisis Group experts Olesya Vartanyan, Zaur Shiriyev and Anita Mihaeljana explain what can be done to safeguard the ceasefire.