In January, Iran executed a former senior official who provided Britain with valuable intelligence on Iranian nuclear and military programs over a decade, according to Western intelligence officials.
In April 2008, a senior British intelligence official flew to Tel Aviv to deliver an explosive revelation to his Israeli counterparts: Britain had a mole in Iran with high-level access to the country’s nuclear and defense secrets.
The spy had provided valuable information — and would continue to do so for years — intelligence that would prove critical in eliminating any doubt in Western capitals that Iran was pursuing nuclear weapons and in persuading the world to impose sweeping sanctions against Tehran, according to intelligence officials.
