U.S. President Donald Trump speaks to reporters at the United Nations headquarters. REUTERS/Caitlin Ochs

UNITED NATIONS (Reuters) - U.S. President Donald Trump said on Tuesday the Iranians have no choice but to change before a meeting with him can occur, but he looks forward to having a great relationship in the future.

Speaking before he was due to address the U.N. General Assembly, Trump said: “I’m not meeting with them until they change their tune. It will happen. I believe they have no choice. We look forward to having a great relationship with Iran, but it won’t happen now.”