Does Russia and China pose a bigger threat to America than Iraq or Afghanistan?

Does Russia and China pose a bigger threat to America than Iraq or Afghanistan?
Russia and China are both building up their arsenel and military might. A new cold war might resurface between Russia and America. China is destined to become the next superpower and might overtake America in the next few decades. And China doesn't always "play nice".

Are these two superpowers a bigger threat than Afghanistan and their Taliban, or the Sunnies and Kurds in Iraq? Does America have its priorities mixed up at this point.