The U.S. has sent additional military forces, warships and fighter jets to the Middle East as Israel braces for a possible retaliatory attack by Iran and Hezbollah. Last week, Israel assassinated Hamas political chief Ismail Haniyeh in Tehran, as well as a top Hezbollah commander in Beirut. A number of countries, including the U.S, France and the U.K., have urged their citizens to leave Lebanon as fears grow of a broader regional war. President Biden is planning to meet with his national security team today.