Photo from UNIAN

"The meeting was not planned, but due to the internal situation, the Americans want to once again assess what is happening in Ukraine," the source said, according to LIGA.net.

As UNIAN reported, Volker and Russian special representative Vladislav Surkov discussed the ceasefire in eastern Ukraine at a meeting in Belgrade on Saturday, October 7.

That was their second meeting. The first one took place in Minsk on August 21.