US President Joe Biden wants to discuss his talks with Russian President Vladimir Putin on the Ukraine conflict with Eastern European NATO partners on Thursday.
The White House said Wednesday that Biden wanted to hear the nine countries 'views on the conflict in their neighborhood and "underscore the United States' commitment to transatlantic security."
NATO is concerned about the increase in Russian troops on the border with Ukraine.
The heads of state and government of Bulgaria, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania and Slovakia are expected to take part in the call.
Biden had previously spoken to Ukrainian President Volodymyr Selenskyj about his virtual summit with Putin.
Tens of thousands of soldiers deployed
Biden and Putin had exchanged views on the conflict in eastern Ukraine at the video summit on Tuesday.
Russia has gathered tens of thousands of soldiers on the border with its neighboring country, which is fueling fears in the West that the Russian army could invade Ukraine.
Moscow rejects this and accuses Ukraine of provocations.
In the event of an invasion, Biden threatens Putin with unprecedented US sanctions.
So far, however, Biden has ruled out a direct military confrontation with Russia.