A transnational pipeline was shut down on Wednesday after Kyiv refused to renew a prewar agreement that allowed for the transit of Russian gas through its territory.
Stepped up attacks by Russia are heightening longstanding concerns over how Ukraine manages its military and countering assumptions that Moscow’s offensive would slow, soldiers and military analysts say.
Foreign leaders have rushed to ingratiate themselves with Donald J. Trump in recent days, nervously recalling the clashes, insults and feuds of his first presidency.