In the Incredible Hulk #440, the two warriors clash again, though it is under very bizarre circumstances. Terrorist attacks from a group called "The Alliance" have countries around the world considering going nuclear, which could easily spell the end of the world. Hulk decides to avert Armageddon in the Hulkiest way possible: he grows a badass beard, gives himself a supervillain name ("The Maestro"), and proclaims that he is the leader of the Alliance so that the world will focus on killing him instead of each other. And when the world needs a volunteer to go kill a Hulk, Thor is quite eager for the fight.
Relative to most of their prior fights, this one is serious business. Thor wants to kill Hulk, and in order to do so, he decides to embrace a kind of killer mindset that he calls "the warrior's madness" (possibly because Wolverine has a trademark on "berserker rage"). Despite going all in on this fight, Thor still can't beat Hulk, and it looks like the two are going to have another standstill. When it looks like Thor won't be able to kill Hulk, the Army actually authorizes dropping a nuclear weapon on their position in the antarctic. Hulk sees the bomb coming and, rather than let Thor die, tosses the Asgardian to safety. Hulk, too, manages to survive, leaving this fight as another draw.