The officials warned lawmakers that the assembled Russian force on the frontier is growing at a rate that would give Putin the force he needs for a full-scale invasion — some 150,000 soldiers — by mid-February.
Both leaders have said yes in principle to the summit, proposed by French President Emmanuel Macron, his office said, with the White House confirming Biden's willingness, though it was notably cautious.
Johnson also said Defence Secretary Ben Wallace and Foreign Secretary Liz Truss will both travel to Moscow soon. His comments come as officials in the United States say an attack by Russia on Ukraine could occur within days or weeks.
Putin said the first Moscow summit he has held with a Western leader since the Kremlin began massing troops near its neighbor had been substantive, but also repeated warnings about the threat of war were Ukraine to join NATO.
Lavrov and Blinken spoke on Tuesday and reiterated positions put forward by Putin and President Joe Biden. The White House said Biden and Putin could also speak once the US receives Russia’s response.
When the president was asked to evacuate at the behest of the United States government, he refused and said that he needed weapons to fight back, the Independent said, quoting a senior US intelligence official.
"Their father simply handed over the two kids to me, and trusted me, giving me their passports to bring them over," 58-year-old Ableyeva said, the arms of the young boy she had known for just a few hours around her neck.
Germany and France joined Britain, the Nordics and Baltic states in announcing bans on Russian use of their airspace, a major escalation in a tactic by mostly Nato allies to wage economic war against Putin in retaliation for the invasion.
"I think we need to prepare for millions," she told reporters in Brussels, adding she was in favour of activating the EU's temporary protection directive to provide shelter for those people coming to the EU.