U.S.-Iran talks about Iraq's security will begin in Iraq on May 28, Iran's foreign minister said Thursday.

Manouchehr Mottaki said the negotiations would be exclusively about Iraq and that a first meeting in the presence of Iraqi officials would try to set a more detailed agenda.

"Nothing but Iraq is on the agenda," he told reporters in Islamabad, where he has been attending a ministerial meeting of the Organization of the Islamic Conference.

• Visit FOXNews.com's Iraq Center for more in-depth coverage.

U.S. Ambassador to Iraq Ryan Crocker is to lead the American side and Mottaki said Iran would send "one of its senior diplomats" at the level of ambassador as its chief negotiator.

Mottaki didn't detail what Iran wanted to discuss, but underlined Tehran's argument that the continued U.S. military presence — as well as terrorism — in its western neighbor was part of the problem.

"We do believe that a correct approach to Iraq should look to both points, or both areas of the difficulty. Terrorists say that 'we are doing this because of the foreign forces,' and the foreign forces saying that 'we are here because of the terrorist groups,"' he said.

Complete coverage is available in FOXNews.com's Iraq Center.