The Ukrainian parliament has approved the formation of a national coalition government.
The parliament has proposed former economy minister Arseny Yatseniuk to lead the coalition as prime minister.
"Our country is on the brink of economic and political collapse," Yatseniuk told parliament after his nomination.
He warned that Ukraine faced threats to its territorial integrity, and promised to pursue European integration.
But he also warned of "unpopular" decisions ahead to tackle the crisis.
The new government follows the overthrow of President Viktor Yanukovich, who has not been confirmed as having been seen since Saturday.