U.S., Canadian, British and Iraqi officials say they believe the plane crash near Tehran in which 176 were killed yesterday was likely caused accidentally by an Iranian anti-aircraft missile, while Iran says it was due to "mechanical failure".
The 53 Americans taken hostage in Tehran, Iran, in 1979, or their families, will receive compensation of $4.4 million each from the United States government as a result of a provision in the spending deal signed into law last week.
The Supreme Leader of Iran Ali Khamenei accuses the United States of "holding a gun" to Tehran's head to pressure it to hold direct talks and states that it's very unlikely that these talks may take place.
Iran rebuffs a Stuxnet-style computer worm attack on a power plant in southern Iran. Tehran accuses Israel and the United States of planting the malware.
Police in Iran make several arrests of suspects in relation to an attack on two nuclear physicists that it claims are connected to the United States Central Intelligence Agency, Mossad from Israel, and MI6 in the United Kingdom.
Iranian scientist Shahram Amiri, who says he was abducted by the United States Central Intelligence Agency, says the United States wanted him to confess to being a spy as part of a plan to force the release of three Americans spies caught by Iran.
Shahram Amiri, the Iranian nuclear scientist allegedly abducted by the United States Central Intelligence Agency, leaves U.S. soil: Iran states it will continue to pursue the case "legally and diplomatically".
Iran passes on to Tehran's Swiss embassy what it describes as evidence proving that the United States Central Intelligence Agency abducted Iranian nuclear scientist Shahram Amiri.
Shahram Amiri, a scientist involved in Iran's nuclear program, defects to the United States and begins talking to the Central Intelligence Agency.
Masoud Alimohammadi, an Iranian nuclear physics professor, is killed in a bomb attack in the capital Tehran; Iran state media accuses Israel and the United States of involvement.