Bashar is a weak ruler from a minority group. He may go to war not based on Rabinovih's concerns but because he wants to maintain control of his country. He, like all the Arabs, know that the international community will not allow his total defeat but will force a ceasefire on Israel after he obtains some limited millitary objectives.
Report: Palestinian, 18, killed in clashes with IDF in West Bank (Haaretz)
from the article: Don't push Assad into a corner