Peskov said he did not know whether Putin and Obama had discussed the fight against the Islamic State militant group. Obama and Putin are in Beijing for the Asia-Pacific Economic Cooperation (APEC) Summit, which this year is being hosted by China.

"Several times, even more than two times, the breaks [between APEC working sessions] were used to talk briefly with President Obama – [these were] short conversations, relating to the relationships between [our] states, the situation in Syria, Ukraine and Iran," Peskov told reporters on Tuesday, according to Russian information agency RIA Novosti.