“The president will meet with Almazbek Atambayev in Sochi on Saturday and with Alexander Lukashenko on Sunday,” Ushakov told reporters.
Kremlin spokesman Dmitry Peskov told RIA Novosti earlier on Thursday that Putin was expected to discuss bilateral relations with the Belarusian leader, who according to local media reports is currently on a short vacation in the Russian resort town.
Belarus is a member of the Eurasian Economic Union, which came into effect on January 1 and also includes Russia, Armenia and Kazakhstan. Kyrgyzstan's membership, agreed to in December 2014, is expected to come into force this May.
The EEU's stated goal is to ensure economic integration among member states, including the free flow of goods, services, capital and labor across the vast Eurasian territories.
According to Russian Deputy Foreign Minister Vasily Nebenzya, some 40 countries have officially expressed interest in creating a free-trade zone with the EEU.