Some will say Barak is just power-hungry, that's why he's in the coalition. But I would credit Labor with more commitment to its own policies, particularly regarding a 2-state solution. By being in the coalition, Labor counter-balances the far and religious right - UTJ, National Union, Jewish Home. In the same way that Yisrael Beitenu (secular, in favour of 2 states) balances out Shas. It means Bibi cannot abandon the 2-state solution without risking his coalition's survival.
Gunmen in Egypt kill guard outside Niger embassy (Reuters)
from the article: Palestinians under world pressure not to declare state unilaterally