For an event that would turn a page in American history, former president Jimmy Carter has agreed in principle to host former Iranian president Mohammad Khatami for talks during his visit to the United States starting this week. Carter's term as president was dominated by the rupture in relations after the 1979 Iranian revolution and the takeover of the U.S. Embassy in Tehran, where 52 Americans were held hostage for 444 days until the day he left office. Iranians made the overture for the meeting, and the Carter Center in Atlanta is working on the possible timing, said Phil Wise,...