Iran's Supreme Leader Ayatollah Ali Khamenei delivers a sermon during his visit to Mashhad, 741km (463 miles) east of Tehran, March 21, 2009. Khamenei said on Saturday U.S. President Barack Obama's offer of better ties was just a "slogan", but pledged Tehran would respond to any real policy shift by Washington. Speaking a day after Obama's videotaped overture, Khamenei, Iran's most powerful figure with final say on all matters of state, said he saw no such change yet from the United States. Reuters Pictures 8 months ago

Iran's Supreme Leader Ayatollah Ali Khamenei delivers a sermon during his visit to Mashhad, 741km (463 miles) east of Tehran, March 21, 2009. Khamenei said on Saturday U.S. President Barack Obama's offer of better ties was just a "slogan", but pledged Tehran would respond to any real policy shift by Washington. Speaking a day after Obama's videotaped overture, Khamenei, Iran's most powerful figure with final say on all matters of state, said he saw no such change yet from the United States.