Reuters Disarray within India's ruling Congress party burst into the open on Tuesday after its stunning defeat in state elections, with a senior figure saying the party would lose a general election and needed time in opposition to reinvent itself. Mani Shankar Aiyar – a veteran of the party who is close to the Nehru-Gandhi family that has run the Congress for decades – predicted defeat in the national election due by next May. “Who can be even half-way realistic and expect the Congress to return to power?” Aiyar told…