At the climax of the story, after Luthor infiltrates his capitol, Superman does decide to invade the United States, defeating a futuristic U.S. Pacific Fleet and an army of superbeings (including Wonder Woman, Green Lantern and Doomsday) along the way. Luthor himself is yanked down deep into the recesses of the Fortress by Brainiac to be converted surgically into a Superman robot. Brainiac and Superman storm the White House after defeating all the U.S.'s defenders. They are greeted by Lois Luthor with the last weapon, a small note written by President Lex Luthor that reads, "Why don't you just put the whole world in a bottle, Superman?". Superman, realizing the error of his ways, is horrified by the revelation that he has essentially become another Brainiac- "an alien bullying a less-developed species." He calls off the invasion, but Brainiac objects; he reveals that his twelfth-level intellect let him easily subvert any attempts at reprogramming him, and that he has never been under Superman's control. He attacks Superman with a kryptonite beam weapon, nearly killing him while boasting about how he will conquer the entire universe after finishing off all his foes on Earth. However, he is finally defeated when Luthor (having escaped surgery through undisclosed means) hacks and shuts off Brainiac from the inside. His body is promptly destroyed by Superman.