US not optimistic about Ukraine talks as Zelenskiy ups pressure on Biden

Ukraine president raises specter of ‘third world war’ Biden pressed to increase military aid ahead of Nato visitUkraine – live coverageJoe Biden’s ambassador to the United Nations warned on Sunday there was little immediate hope of a negotiated end to the war in Ukraine, as pressure continued to build on the US president ahead of a crucial Nato summit in Europe this week.Linda Thomas-Greenfield was reacting on CNN’s State of the Union to an interview with Volodymr Z