fly in the ointment

But there is still one fly in the ointment: researchers have not yet succeeded in reproducing all the crucial details of the observations in model calculations.

“The goat is like a fly in the ointment of perfection,” Freeman says.

Netanyahu, who has often used the U.N. podium to warn against Iran, described his country's arch-foe as the "fly in the ointment" that would try to wreck a deal with Saudi Arabia.

"The drop in inflation in the U.S. is encouraging, although the fly in the ointment is that this drop is largely coming from energy and goods prices," the report said.

“To me, the fly in the ointment is Greg Norman,” Krotee said.