Invincible Iron Man Vol. 10: Long Way Down

Collects Invincible Iron Man #516-520:

He quit being sober. He quit being an Avenger. Will he really quit being Iron Man? Tony Stark's life is spiraling out of control -- or so it seems. As his deadly chess match against the Mandarin reaches its fateful crescendo, will Tony's inscrutable strategy result in a hard-fought victory or utter defeat?