By bombing three nuclear sites in Iran, the United States has joined Israel’s war against the country. Now it is bracing for Iranian retaliation.

President Donald Trump took the U.S. into war with Iran on Saturday, raising the specter that the nation would return to the bloody Middle East entanglements of the early 2000s. U.S. planes dropped bombs on three nuclear sites in Iran,

Saturday’s U.S. strike on Iranian targets “was the easy part… once you’ve got a toe in the water, you’ve got a foot in the water and then you’re all the way in,” a foreign policy analyst told HuffPost.