The Ukrainian government has imposed a state of emergency across its embattled eastern region – and placed the entire country on high alert.
It follows a new offensive by separatist rebels, who Ukraine says are backed by Russia.
Russia and the West are now trading accusations after the worst violence since a September ceasefire in Ukraine.
But as the war of words escalates, are the chances of a negotiated settlement drifting further away?
Host: Shiulie Ghosh
Petro Burkovskiy, from the Analysis and Information Division at the National Institute for Strategic Studies, in Kiev.
Kurt Volker, former US ambassador to NATO and executive director for the McCain Institute for International Leadership, in Washington, DC.
Dmitry Babich, a political analyst and journalist for the Valdai Discussion Club in Moscow.