The talks seek to limit Iran’s nuclear program in exchange for the lifting of some of the economic sanctions the U.S. has imposed.

Iran and the United States began a fourth round of negotiations Sunday over Tehran’s rapidly advancing nuclear program, officials said, just ahead of a visit by President Donald Trump to

Iran and the United States began a four Sunday over Tehran’s rapidly advancing nuclear programme, officials said, just ahead of a visit by President Donald Trump to the Middle East this week. The round of talks,