Bush administration officials reassured Israel's defense minister this week that the United States has not abandoned all possibility of a military attack on Iran, despite widespread Israeli concern that Washington has begun softening its position toward Tehran. In meetings Monday and Tuesday, administration officials told Defense Minister Ehud Barak that the option of attacking Iran over its nuclear program remains on the table, though US officials are primarily seeking a diplomatic solution. At the same time, U.S. officials acknowledged that there is a rare divergence in the US and Israeli approaches, with Israelis emphasizing the possibility of a military response out of concern that Tehran may soon have the know-how for building a nuclear bomb.