President Barack Obama is telling Iranians another moment to pursue better relations between Iran and the US may not come again soon.
Obama is addressing ongoing nuclear negotiations with Iran in his annual video message marking Nowruz, the Persian New Year.
Obama says Iran has kept its commitments under the interim nuclear deal. But he says coming days and weeks are critical. He says there are gaps remaining and opponents in both countries who oppose a deal.
Obama says there's a way for Iran to assure the world it doesn't want nuclear weapons. He says that path would lead to greater opportunities for Iranians.
But Obama says if Iran's leaders don't choose that path, Iranians will remain isolated and deprived of global opportunities.