Israel, it seems, is ramping up its preparations for war. To what extent circumstances in Syria influence this, I'm not sure. Syria and Iran are allies and it may be that when Syria eventually falls (as it undoubtedly will), Iran will feel even more isolated than it has in the past. It can then either 'fall into line' (unlikely) or become more aggressive or assertive. If that happens, some form of conflict will become inevitable.
Would Israel go it alone, or would they only move with the agreement of the USA? You have to assume the latter, but don't completely rule out unilateral action; dragging the US and possibly others unwillingly into the conflict. The other question, is when? With a Presidential election just a few months away, timing is tricky. Would the incumbent risk getting drawn into conflict on the eve of an election - or would it add a spark to his election campaign? Alternatively, might Israel hold off for a few months, in the hope of seeing a potentially more sympathetic Republican ally in the White House?
For what it's worth, my view is that it will wait until the end of the year or into 2013. But then, prepare for major earth changing events. Along with the world's economic woes, not least in the slowly decaying eurozone, the pace of change in the world we live in will gather pace.
But remember, major change is not necessarily bad. It may feel like it at the time, but perhaps not in hindsight. A sentiment, for those who have read it, that I echo at the end of Alpha to Omega.