Answer:
What can run but can’t walk?
As a whole, I am both safe and secure. Behead me, I become a place of meeting. Behead me again, I am the partner of ready. Restore me, I become the domain of beasts.
It happens when something has been cut with H2O.
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time we’ll last.
It's a game played by serious people that takes place on a global scale.
Long and slinky like a trout, never sings till it's guts come out.