Sen. Rand Paul (R-KY) urged President Donald Trump to show caution in aiding Iranian protesters, suggesting strikes could have the opposite of the intended effect the president wants.

Trump warned Iran not to kill the country’s protesters “because we’ll start shooting too,” adding that the United States is “ready to help” the protesters gain freedom. Sen. Lindsey Graham (R-SC) is also fueling speculation the U.S. could step in soon, writing on X that “help is on the way.”