The White House said both agreed to keep pushing both deterrence and diplomacy to try to stave off a feared Russian military offensive.
Moscow's forces are massing on Ukraine's north, east and south in what the Kremlin insists are military exercises.
A U.S. official updated the Biden administration's estimate for how many Russian forces are now staged near Ukraine's borders to more than 130,000, up from the more than 100,000 the U.S. has cited publicly in previous weeks.
The official spoke on condition of anonymity to discuss the administration's conclusions.
"If you, or anyone else, has additional information regarding a 100% Russian invasion starting on the 16th, please forward that information to us.".
In the nearby city of Kalanchak, some expressed disbelief that Putin would really send his troops rolling into the country.
The U.S. Army also is shifting 1,000 soldiers from Germany to Romania, which like Poland shares a border with Ukraine. »