US does not want Israeli attack on Iran if talks still hopeful, Trump says

"We are fairly close to a pretty good agreement. It's got to be better than pretty good, though. I'd much prefer an agreement," US President Donald Trump told reporters in the White House on Thursday.

"As long as I think there is an agreement, I don't want them (Israel) going in, because I think that would blow it. Might help it actually, but it also could blow it. But we've had very good discussions with Iran. Whether or not we get there, I can't tell you, but it'll happen soon."

Trump cited the possibility of a potential "massive conflict" in the region for drawing down US personnel from the Middle East.

"There's a chance of massive conflict. We have a lot of American people in this area, and I said we've got to tell them to get out, because something could happen soon. And I don't want to be the one that didn't give any warning and missiles are flying into their buildings."