As the United States is sending 900 troops to Israel amid the heightened tensions, President Joe Biden has delivered a direct message to Irans Supreme Leader Ayatollah Ali Khamenei against targeting US personnel in the region, said the White House after American forces were attacked in Iraq and Syria.US warns Iran not to attack its troops in IsraelThere was a direct message relayed, White House spokesman John Kirby said at a press conference, declining to elaborate.Kirbys remark comes as US officials remained concerned about a wider conflict in the Middle East following Hamas October 07 attack on Israel, with the Pentagon increasing surveillance and deploying additional military assets and personnel in the region.The Pentagon said on Thursday that US forces have been attacked more than a dozen times in Iraq and Syria in the past week.Biden on Iraq, Syria attack amid Israel-Hamas warOn Wednesday, Biden said he had warned the Ayatollah that the United States would respond if US forces continued to be targeted but did not specify how the message was communicated.My warning to the Ayatollah was that if they continue to move against those troops, we will respond, and he should be prepared. It has nothing to do with Israel, the president told a news conference.