We have come to a mutual understanding at the meeting with the US president Barack Obama; the US is one of the key partners of Russia in the security sphere, announced the Russian President Vladimir Putin during a press  conference summing up the results of the G20 Summit, reports the RIA Novosti.

"Basically we had a debate. It seems that we have reached a mutual understanding, understanding of the problems that we face, but there are still some technical issues that need to be readdressed. If Kerry and Lavrov manage to do it, we'll take one more important step towards regulation of the Syrian conflict, " added Putin.