UNITED NATIONS (AP) — France's president is meeting with Iran's new president on the sidelines of the U.N. General Assembly, saying he is open to dialogue with the Middle Eastern leader but won't tolerate nuclear proliferation.

Francois Hollande said recent comments by Iranian President Hasan Rouhani provide a glimmer of hope to resolve the yearslong standoff over the country's nuclear program.

But Hollande stressed that Rouhani's words must be backed by "concrete gestures" that show the country renounces its military nuclear program.

The two leaders are meeting Tuesday afternoon.

There was no clear indication whether Rouhani and President Barack Obama would meet briefly during the General Assembly. It would be the first encounter between U.S. and Iranian leaders in 36 years.