Dubai: As India and the US work to iron out differences and seal a trade deal, economist Nouriel Roubini said economic and market pressures would compel Washington to adopt a more constructive approach towards New Delhi. He said the next few decades could be about India as much as the past several decades were about China."US policymakers need to recognise that maintaining good relations with India, including trade is critical and fundamental," Roubini told ET on the sidelines of the SuperReturn Middle East event. "India is a huge and rising economy and is aligned with many of the objectives of…