Bosnia = micro-Yugoslavia
It should be dissolved.
If war starts:
1. Sprska has no army now, just light arms like everyone else
2. Croatia has the most modern army of the West Balkans and they are ready.
3. Bosniaks (Muslims) are extremely angry and all they need is guns and direction, something Croatia, Turkey, Iran and Arabs will easily provide
4. If Serbia joins it has to be careful about who gets on the other side (the loser gets smaller!!! Maybe Sandzak, Vojvodina, or Presevo?)
5. Even if Russia wants to help, they can't; Serbia is landlocked and surrounded by NATO members or aspiring NATO members.
6. If a NATO member goes to war against a non-NATO member will US, Germany, UK just sit out? No!
7. If US gives the Albanians (very soon to be NATO members) the go ahead they will attack and take Presevo Valley and probably take Nis as well (it was 100% Albanians before they were thrown out by Serbs in 1878)
8. Albania has a defense treaty with Turkey, a NATO member and the world's 4th military power if needed.
9. Albania and Croatia get along just great now and Serbia's 25,000 poorly armed soldiers can barely handle one front.
Conclusion: Srpska will not go anywhere, at least not now, and not with those borders. No one will back them diplomatically or militarily. Russia will be kept out by US, Germay, France, UK and Turkey and poor Serbia is trying to join EU while declaring neutrality (after being surrounded by NATO countries.) Being declared a 'joint criminal enterprise' yesterday over Kosovo did cut their wings quite a bit.
See http://www.iht.com/articles/2009/02/27/europe/27hague.php
My guess is that US and EU will use the crisis and the checkmate on Serbs to disband Srpska once in for all. Tadic and Dodik are scared of that as their declarations to support it point out. Essentially, NATO is in control and no war will be allowed because the consequences are too big.