Shahram Amiri, an Iranian nuclear scientist who in March was reported to have defected to the US, has now taken refuge in the Pakistani embassy in Washington, seeking immediate repatriation to Iran.
Iran says two United Nations weapons inspectors spread false information about Tehran's nuclear program, and both are now unwelcome. Analysts see it as a reaction to the newest round of UN sanctions on Iran.
Iran is facing sanctions well beyond what the United Nations Security Council approved June 9. EU heads are today expected to follow the US in approving new sanctions to target Iran's energy and financial sectors.
Denied permits, Iran's opposition movement canceled demonstrations to mark the one-year anniversary of controversial national elections. Washington has stepped up efforts to aid the dissidents.