Iranian President Mahmoud Ahmadinejad flashing a victory sign
during a UNGA session, Sept. 24, 2012. Iranian President Mahmoud
Ahmadinejad flashing a victory sign during a United Nations
General Assembly session in New York, September 24, 2012. Photo
by AP Text size  In his address to the United Nations General
Assembly on Tuesday evening, U.S. President Barack Obama will
send a clear and more assertive message to Iran regarding its
nuclear program, White House insiders told Haaretz. Obama will
stop short, however, of giving Tehran an ultimatum, as Prime
Minister Benjamin Netanyahu has been demanding.  A senior White
House official said: "We have a red line: the president is
determined to prevent Iran from obtaining a nuclear weapon. We
have consistently framed that issue around Iran's profound
failure to meet its international obligations with respect to
its nuclear program. Therefore, [the General Assembly] presents
another opportunity for him to underscore that Iran must not be
allowed to develop a nuclear