If Abdullah is so concerned - as you state - then he can immediately embark on a diplomatic path to avoid his bleak prediction of war. The way to achieve this is for Jordan to offer to negotiate and divide the future sovereignty of the West Bank with Israel thereby freeing the majority of the existing Arab population from continuing Israeli control and making them citizens of Jordan once again. If Abdullah is the concerned humanitarian he wants us to believe then people like you should be asking him this question and demanding an unequivocal answer.
Protests in southern Syrian city after Druze cleric's death (AP)
from the article: Israel has ample reason to worry in its 63rd year