Sri Lanka, June 20 -- US President Donald Trump will decide in the next two weeks whether the U.S. will get involved in the Israel-Iran air war, the White House said on Thursday, raising pressure on Tehran to come to the negotiating table.

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."

The Republican president has kept the world guessing on his plans, veering from proposing a swift diplomatic solution to suggesting the U.S. might join the fighting on Israel's side. On Wednesday, he said nobody k...