LONDON, March 5 : The Iran conflict drove oil prices higher again on Thursday, keeping contained pressure on Europe's markets after reports of de-escalation efforts and a massive stabilisation package for South Korea's bourses triggered sharp rallies in Asia. Iran launched a wave of missiles at Israel early on Thursday, just hours after Republican Senators in Washington blocked a bipartisan move to halt the U.S. air assault. U.S. Energy Secretary Chris Wright said the impact of the conflict on