Ohio Gov. John Kasich appeared on "Hannity" tonight after declaring earlier in the day that he is officially running for president.

Kasich, who is now the latest entrant in a crowded Republican field, told supporters Tuesday, "I have the experience and the testing — the testing which shapes you and prepares you for the most important job in the world."

Kasich spoke to Sean Hannity about his upbeat vision for a united America and a wide variety of topics, including his dislike of last week's nuclear agreement with Iran.

"My opinion is this is a very bad deal. I hope it falls apart," Kasich stated. "I think they fell in love with this deal."

"I would have kept the sanctions on. And if I became the president of the United States, which I think I have a very good chance of doing, if their behavior has not dramatically changed, I’d try to slap the sanctions back on."

Watch more from Kasich above.

'We're Fiddling Around While Rome Burns': Gov. Kasich Pushes for Balanced Budget

Ohio Gov. Kasich: 'Fed Up' Neither Party Can Control Their Spending Habits