Hedge funds had turned more bullish on the outlook for petroleum prices, even before the decision to replace the U.S. president’s national security adviser with an anti-Iran hawk was announced on Thursday. Hedge funds and other money managers increased their net long position in the six most important futures and options contracts linked to petroleum prices by 95 million barrels in the week to March 20. The combined increase was the largest since the end of October and reversed a draw of 73 million barrels over the two previous weeks, according to records published by regulators and exchanges.