Iran's Supreme Leader Ayatollah Ali Khamenei waves to his supporters during his visit to Mashhad, 900 km (540 miles) east of Tehran, Iran, on Saturday March 21, 2009. Iran's supreme leader rebuffed President Barack Obama's latest outreach on Saturday, saying Tehran was still waiting to see concrete changes in U.S. policy. Ayatollah Ali Khamenei was responding to a video message Obama released Friday in which he reached out to Iran on the occasion of Nowruz, the Persian new year, and expressed hopes for an improvement in nearly 30 years of strained relations.