This is going to be a major issue between India-USA relations. India must solve this, the ball is in India's court. My personal feeling is that Iran is going to be another Iraq; USA will definitely go to the extreme and we will see another US occupied country in middle east. In that case, India will lose both USA and the gas for which she is taking this risk. So she has to decide if the risk is worth taking and be wise enough to understand international situations.
