Russian Foreign Minister Sergey Lavrov and his US counterpart John Kerry met on the sidelines of this week's Asia-Pacific Economic Cooperation (APEC) summit in Lima, Peru. The situation in Syria was expected to top the diplomats' agenda, Sputnik news agency reported.

Lavrov called the meeting "productive," while Kerry described it as "constructive."

The Russian foreign minister suggested that there may be some progress in US-Russia Syria discussions, but that the process of agreeing clearly on the differentiation between terrorists and the Syrian opposition remains impossible.

Moscow is dismayed that Washington appears to be keeping the al-Nusra Front active, despite the fact that the United Nations has declared that group to be terrorist, Lavrov added.

"The contacts are bringing some result, but everything depends on the same issue, which is why the Americans had failed to fulfill our agreements with them, that is the differentiation between the so-called moderate opposition and Jabhat al-Nusra," Lavrov said.

Source: MENA