possible Russian invasion within days, saying he had yet to see convincing evidence, even as the U.S. warned Sunday of more Russian troops pressing closer to Ukraine's borders and some airlines canceled or diverted flights there.The White House said President Joe Biden would talk later in the day with Ukrainian President Volodymyr Zelenskyy.The Ukrainian leader's repeated statements urging calm among his people — while Russian forces surround Ukraine on three sides in what Russia insists are military exercises — grew this weekend to Zelenskyy questioning strident warnings from U.S.
officials in recent days that Russia could be planning to invade as soon as midweek.The U.S. picked up intelligence that Russia is looking at Wednesday as a target date, according to a U.S.
official familiar with the findings. The official, who was not authorized to speak publicly and did so only on condition of anonymity, would not say how definitive the intelligence was.Ukrainian President Volodymyr Zelensky gestures during a joint press conference with French President following their meeting in Kyiv. (SERGEI SUPINSKY/AFP via Getty Images) "We’re not going to give Russia the opportunity to conduct a surprise here, to spring something on Ukraine or the world," Jake Sullivan, the U.S.
national security adviser, told CNN on Sunday, about the U.S. warnings."We are going to make sure that we are laying out for the world what we see as transparently and plainly as we possibly can," he said.The U.S.