Vladimir Putin has discussed working with international "partners" to take on Islamic State militants, according to Russian media.
The Russian president was reported to have talked about the issue with his Security Council today.
Kremlin spokesman Dmitry Peskov would not say which countries Russia may be willing to work with.
President Obama has made clear that the US will not send ground troops to fight Islamic State terrorists in Iraq.
Speaking at US Central Command in Florida, Mr Obama told military personnel: "As Commander-in-Chief I will not commit you and the rest of our forces to fighting another ground war in Iraq."
He said US personnel in Iraq were there to "support Iraqi forces on the ground as they fight for their own country against these terrorists".
Did Philip Hammond misspeak or did he reveal the thinking at the highest levels of government on military action in Syria?
President Obama - a leader who thought his legacy would be ending two conflicts - has plunged the US into the maelstrom of two civil wars.
A social media campaign imitating the popular Ice Bucket Challenge has gone viral. Its target is Islamic State.