Syria's deadly crackdown on political protesters has provoked outrage at the UN, the European Union and from some Arab countries as well. International sanctions are not expected to make any difference to the regime of Bashar Assad, who's already killed some 400 of his own people. But, even if he remains in charge, instability in Syria could have consequences for the balance of power in the Middle East and for alliances with western countries. We update the unrest and the implications for Iran, Israel and Saudi Arabia. Does President Obama have a coherent strategy, or is he playing it by ear?