Why is this not a functional declaration of war?

Iran awarded Venezuelan President Hugo Chavez its highest state medal on Sunday for supporting Tehran in its nuclear standoff with the international community, while Chavez urged the world to rise up and defeat the U.S., state-run media in both countries reported…

“Let’s save the human race, let’s finish off the U.S. empire,” Chavez said. “This (task) must be assumed with strength by the majority of the peoples of the world.”