Ukrainian Prime Minister Arseniy Yatsenyuk announced his resignation Sunday in the wake of a months-long political crisis that has paralysed the government and frozen the release of vital Western aid. "Having done everything to ensure stability and make a smooth transition of power possible, I decided to step down from the post of prime minister of Ukraine," the pro-Western leader said in a weekly television address. Yatsenyuk, 41, said President Petro Poroshenko's party had already nominated parliament speaker Volodymyr Groysman to succeed him and that he would not stand in the way.
