Because the obligations of said treaty were laughably absurd and convinced everyone who saw it that Luria hadn't the slightest interest in a peaceful coexistence with D'Hara. It essentially said "Force D'Hara to pay up for allowing us to take regions which had the audacity to surrender to them when we wanted them instead and make war on them if they fail." If that had been reversed with D'hara seeking reparations instead, it never would have flown either. That antic insulted both the Prime Minister and the Grand Mistress by wasting their time, then Alice stormed out without bothering to actually negotiate.
I can understand starting out high to begin negotiations in a bartering sort of diplomatic style. But to leave without haggling at all indicates exactly Zero interest i the deal at hand. Alice came to the summit to keep up appearances, nothing more. In fact, I'd wager that she was gearing up for war with SOMEONE even before that point.
Except that Morek instantly indicated it wouldn't act to enforce the treaty against D'hara, before any negotiating on terms could take place. D'hara didn't let Luria Nova do anything. Luria Nova completely and totally wrecked D'hara and Luria Vesperi in war, and was claiming what was Luria Nova's by right. You know, rather than continuing the war that it just won against Luria Vesperi and D'hara, sans D'hara's lone ally in that conflict.
