United Airlines and Delta Air Lines have suspended flights to Tel Aviv amid escalating tensions in the Middle East following the assassination of Hamas leader Ismail Haniyeh in Tehran. The suspensions are in response to security concerns, with United halting flights indefinitely and Delta pausing service until August 2. The assassination has provoked threats of retaliation from Iran and its allies, further destabilizing the region. Airlines like Austrian Airlines, Lufthansa, and KLM have also ceased flights to Israel, while British Airways continues operations. The U.S. and other countries have advised their citizens to leave Lebanon due to potential escalations involving Hezbollah. The U.S. State Department maintains travel advisories for the region, urging caution.