Answer:
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away, yet lust for me keeps me locked away.
It's a game played by serious people that takes place on a global scale.
My first is in window but not in pane. My second's in road but not in lane. My third is in oval but not in round. My fourth is in hearing but not in sound. My whole is known as a sign of peace. And from noah's ark won quick release.
What is the freedom of birds and the pen of old men?
What can be underwater, under fire, on fire and taking water all at the same time?
You use it between your head and your toes, the more it works the thinner it grows.