Press Secretary of the Ministry of defense Peter cook said that, despite the proximity of operational areas of the USA and Russia in the North of Syria, the military of the two countries do not interact at the operational level. However, he said that some coordination is still there.
Note that in the border zone simultaneously carried out two operations against Islamists, aim to dislodge Islamic state from raqqa, the declared capital of the Caliphate. One leads from the North-West of the Syrian army, with the support of the Russian air force and Hizbullah, the other from the northeast, Kurdish militia backed by the US air force.
By words a press-Secretary, representatives of the armed forces of the two countries have established channels of communication, aimed at avoiding unintended incidents in the Syrian sky. He said the US is ready to launch a joint operation, if Russia will Express its interest.