Arseniy Yatsenyuk
Arseniy Yatsenyuk

Kiev, Ukraine (CNN)Ukrainian Prime Minister Arseniy Yatsenyuk announced Sunday that he would resign, amid an ongoing political crisis.

“We cannot let the government be destabilized when the country is at war,” he said during a televised address.
His formal resignation is expected Tuesday.
Yatsenyuk called for the formation of a new government, and said on Twitter that politician Volodymyr Groysman had been nominated to replace him as Prime Minister.