On Thursday, US President Joe Biden will speak by phone with his Russian counterpart Vladimir Putin "to discuss a range of topics, including upcoming diplomatic engagements with Russia," a senior official said.

In a statement Wednesday, National Security Council spokesperson Emily Horne said that the Biden administration is continuing to conduct substantial diplomacy with its European allies and partners, consulting and coordinating on a shared response to Russia's military buildup near Ukraine.

She stated that the US president has spoken with leaders throughout Europe, and Biden administration officials have engaged in multilateral engagement with NATO, the European Union, and the Organization for Security and Cooperation in Europe (OSCE).

"Officials have also held numerous consultations with their counterparts, including those from eastern flank countries bilaterally and in the B9 format as well as Ukraine," Horne added.

Romania and Poland initiated the B9 Format, supported by Bulgaria, Hungary, the Czech Republic, Slovakia, Lithuania, Latvia, and Estonia.

According to CNN, which cited an administration official, Putin requested the call, which Biden accepted because "he believes when it comes to Russia there is no substitute for direct leader-leader dialogue."

Earlier in the day, US Secretary of State Antony Blinken spoke with Ukrainian President Volodymyr Zelensky, reiterating the US' commitment to Ukraine's independence, sovereignty, and territorial integrity in the face of Russia's military buildup along the country's borders.

"The two discussed efforts to peacefully resolve the conflict in eastern Ukraine and upcoming diplomatic engagements with Russia," according to the State Department.