BEIRUT, Lebanon, Nov. 29 — Iran’s president, Mahmoud Ahmadinejad, told the American people on Wednesday that he was certain they detested President Bush’s policies — his support for Israel, war in Iraq and curtailed civil liberties — and he offered to work with them to reverse those policies.The call came in the form of a six-page letter in English addressed to “noble Americans” that discussed “the many wars and calamities caused by the U.S. administration.” It suggested that Americans had been fooled into accepting their government’s policies, especially toward Israel.