I trust that U.S policy is not heading in the direction pointed out in this article. A war against Iran is going to have the effect of polarising both, the Christian and the Islamic worlds.
All that apart from the fact that thrusting Pakistan into the frontline is likely to result in a collapse of authority there. At a time when Pakistan is torn between the forces of modernisation and fundamentalism, a war-like situation coukd preciptate a civil war there. In the long run, its going to cause inestimale damage to Pakistan itself.
And how the whole thing will affect India is impossible to predict. Either way, it can't be for the better.