India plans to abstain from a vote on Iran's nuclear programme at a meeting of the U.N. atomic watchdog this week, top Indian officials said on Monday. The International Atomic Energy Agency (IAEA) board is due to hold an emergency session in Vienna on Thursday to consider sending Iran to the U.N. Security Council for sanctions over its disputed nuclear programme. The U.S. Ambassador to India, David Mulford, said last week that if India did not oppose Tehran at the IAEA, a landmark India-U.S. nuclear cooperation pact could be in trouble. "We cannot vote with the U.S. after his comments. We're planning to abstain," one senior official, who spoke on the condition of anonymity, told Reuters.