Also in Tajikistan, the speaker of Russia's Federation Council, the upper house of parliament, met with Tajik President Emomali Rahmon.
Valentina Matvienko said Tajikistan has shown interest in joining a Russia-led Customs Union.
Matvienko, who also met with Tajik lawmakers, said Tajikistan has asked Russia to send more than 400 Russian-language teachers to work in Tajik schools.