Mr Dyson was the National Union of Teachers' official who led strike action at Rawmarsh Community School and is the joint divisional secretary of the union's Rotherham branch.
Diskin, a widely respected former security official, also took the two Israeli leaders to task for mis-characterizing the possible effectiveness of a military strike against Iran and its nuclear program.
U.S. authorities say they do not believe the strike was linked to growing concerns about Syria's chemical weapons, the senior U.S. official said Wednesday.