Citing a message from Trump, White House Press Secretary Karoline Leavitt told reporters: "Based on the fact that there's a substantial chance of negotiations that may or may not take place with Iran in the near future, I will make my decision whether or not to go within the next two weeks."

White House press secretary Karoline Leavitt will speak to reporters Thursday amid rising tension in the Middle East between Israel and Iran following nearly a week of air strikes between the two