Donald Trump: “Their rhetoric is causing me to be shot at. They use highly inflammatory language.”

Very good politically and he’s a very good man. He’ll do a great job. Great manager.

Stephen's been with me from the beginning. He gets it, very good politically ... and he's a very good manager. He'll do a great job.

I would rather not destroy the rest of the country if possible, but maybe I will have to. You'll know soon enough.

Within the next two years, NASA will launch the first-ever nuclear-powered spacecraft to Mars.