By Noor Zainab Hussain and Manya Saini March 2 (Reuters) - As the U.S.-Israeli air war against Iran widened on Monday with no end in sight, focus ‌shifted to the impact on airlines. Operations have been disrupted for a third ‌day and revenue losses are not covered by insurers, analysts and insurance industry sources said. Travel stocks from Asia ​to New York tumbled, wiping billions off market value, as the conflict hit thousands of flights worldwide, shut key Middle Eastern hubs and sent oil prices su ...