Presidents Barack Obama and Vladimir Putin may focus on Iran and Syria during talks the leaders plan during the G20 summit in Mexico next month, Interfax reported, citing U.S. ambassador to Russia Michael McFaul.

International sanctions against Iran have spurred the nation to start negotiations on its nuclear program with six countries, McFaul told Interfax in an interview. The question of how sanctions on Iran might affect Russia’s economic interests is a “delicate” one, the news agency cited McFaul as saying.

To contact the reporter on this story: Ilya Khrennikov in Moscow at ikhrennikov@bloomberg.net

To contact the editor responsible for this story: John Viljoen at jviljoen@bloomberg.net