Hi there,
forget about everything that you've read about farming for battle tokens in halaa. You don't need members of the opposite fraction for this.
Here is what you gotta do:
1. Find someone that plays a class that is able to kill himself with a skill (Warlocks Hellfire works best here but also paladins can do it if they use divine intervention for example)
2. Group up and go to Halaa
3. Take it over if your fraction doesn't hold it atm
4. The warlock takes all it's gear off
5. The warlock starts to use Hellfire until he/she is dead
6. Every member of the party gets a halaa battle token
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just repeat this over and over until you have enough tokens to buy the 2 talbuk mounts that sell in halaa. For both mounts together you need 170 Battle Tokens & 35 Halaa Reseach Tokens.
Research Tokens are a bit harder to farm. You get them from turning in 10x Oshu'gun Crystal Powder in Halaa which drops from almost every mob in nagrand.
Have fun farming!