Top Rnking Officlas at the Pentagon and Defense Departmnt said Yesterday (Feb 28,2009) that Iran has enough Fossel Fuel and could make a Nuclear bomb in a matter of months

Today, March 1st, 2009, Secretry Of Defense Robert Gtes said "They are no where near ready to make a Nuclear Bomb,they do not have enough fossel fuel??
Who do we believe??
How can ther by such a drastic difference of opnion between the Defense Department, The Pentagon and Secretary Of Defense Gates??