Assad is a tyrant and hates Israel. The 'stable' thing about him is his continuing hatred of the peple of Zion. It is consistant and unabating and predictable which meets the West's criteria for 'stability'. He is a patsy for Iran. There, that is all the good things I can think of to say about him in relation to Israel.
UN Security Council condemns North Korea launch, vows action (Reuters)
from the article: Assad's fall could deliver Lebanon to Iran and Hezbollah