The Ukrainian president's office says the discussions will take place on the country's border with Belarus.
Vladimir Putin's ordered Russian nuclear deterrent forces on alert amid tensions with the West over his invasion of Ukraine.
The leader claims Nato powers have made, what he's calling 'aggressive statements', with Western countries imposing, what he says, are 'hard-hitting financial sanctions'.
Meanwhile, fighting's continuing in Ukraine's second largest city, Kharkiv, after Russian troops entered following a missile strike on a gas pipeline.
The regional governor, however, maintains they still have full control of the area.