Belarusian President Aleksandr Lukashenko landed in the Russian coastal city of Sochi on Monday around 10 a.m. for consultations with his Russian counterpart Vladimir Putin.
The two meet for a working meeting on strategic cooperation and trade and energy projects.
Lukashenko had been under considerable pressure in his own country since the presidential elections last month.
The president claims to have won it big, but the opposition doubts that. Sunday, between 100,000 and 150,000 people took to the streets. At least 774 people were arrested.
The Belarusian authorities are trying to crack down on the demonstrations, including by arresting many opposition leaders.
Opposition candidate Svetlana Tichanovskaja fled to Lithuania shortly after the elections.