It was the Snapchat heard around the world on Tuesday night.  Justin Bieber has officially pissed off Directioners and now it's the war of the fan armies!

You see, Justin Bieber had already announced that his fourth studio album will drop on November 13th when One Direction unveiled that their new album "Made in the A.M." will come out the same day.  The overlap instantly sparked a Twitter war between the fan armies, but the Biebs just fired the shot heard around the world.

So the question is...who's album will sell more copies in the first week?