"Welcome to hell." The newest trailer for G.I. Joe: Retaliation tore apart London and gave quite an introduction to the doomsday weapon that Cobra Commander and his team plan to use in their scheme for world domination. Now we get a different look at that weapon and a faux president threatening the world with it in a new international trailer that brings plenty more ninja action, more awesome action shots, and another great appearance from Bruce Willis as the original G.I. Joe.