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 vowed to "hunt down terrorists who threaten our country wherever they are" as he authorised air strikes against Islamic State militants in Syria.
Outlining his "comprehensive and sustained" strategy to combat the threat of IS militants - who have murdered two American journalists - President Obama said the group would be "degraded and destroyed".
"This is a core principle of my presidency: if you threaten America you will find no safe haven," he added.
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.