Warhawk is global online play:

Heres the quote from the PS blog:

"First, since Warhawk is a global online game, our IGS method scatters game servers quite literally into player’s homes all over the planet — the US, China, Europe, Australia, and Japan! No matter where you live, what time you want to play, or what language you speak, you’ll always be able to get your game on. "

Its actually an explanation about the unique Warhawk servers, posted on the PS Blog, where the quote comes from, but hey theres the proof guys....