Gulf Arab states sought to reassure Iran of their neutrality in the conflict between Tehran and Israel in meetings in Doha this week on the back of concerns that a wider escalation in violence could threaten their oil facilities, two sources told Reuters. Ministers from Gulf Arab states and Iran attending a meeting of Asian nations hosted by Qatar centred their conversations around de-escalation, the sources said. The Islamic Republic launched its largest ever assault on Israel on Tuesday in what it said was retaliation for Israel’s assassination of senior Hamas and Hezbollah leaders and its o…