I have assembled this helpful and quick timeline of events, used in conjunction to your assertion.
Start of WoW
- Warsong is Attacking Night Elf Lands… Night Elves are allied to the Alliance.
- Night Elves: Please stop
- Warsong Continues attacking NE Lands
- Jaina: Stop attacking the NE Lands yo
- Warsong Continues attacking NE Lands
- Garrosh: KILL ALLIANCE RAWR RAWR
- Jaina/NE: Seriously stop
- Warsong Continues attacking NE Lands
- Jaina realizes the Horde won’t stop, starts gearing up Theramore
- Garrosh: OMG THE ALLIANCE IS DOING A PROVOCATIVE ACTION. ALL OF KALIMDOR SHOULD BE OURS.
- *Garrosh Bombs Theramore in “defense”.
- Garrosh: EVIL ALLIANCE SCUM YOU DEAD NOW AHAHAHAHA. THAT’LL TEACH YOU TO NOT GIVE UP YOUR LANDS WHEN WE DEMAND IT!
- Garrosh drinks the Old God juice, is now more cray cray than before.
Garrosh did nothing wrong.