No one said they did!
But they refuse to give up their right to enrich that high, which would take only a few weeks to reach since they've already got enough material to make 11 nuclear bombs if they DO reach that 90% level.
But why are you purposely avoiding the question?
WHAT POSSIBLE REASON OTHER THAN TO MAKE A NUCLEAR WEAPON IS 90% ENRICHED URANIUM NEEDED FOR?
And since there is NONE, how is it that you can insist that the country that is the largest sponsor of terrorism throughout the world for the past 47 years is NOT interested in building nukes?
Are you really so determined to be that naive?