BREAKING: USA President Trump says he's in 'deciding mode' on Iran.

In the interview, Trump outlined three paths—wiping out the country, letting it "rot economically," or making a deal—while asking "when do I blow the entire nation up?" and warning "they better behave," with "very big things" ahead.

The remarks follow Trump's September 17 Axios interview on a "big decision" about annihilating Iran's regime, as he prepares to engage Gulf allies and possibly Iran's president at the UN General Assembly this week.