Iason Athanasiadis arrested at Tehran airport on June 19 . Journalist had been on assignment for the Washington Times . Score: 6 Released after intense diplomatic effort by Greek government .
Iason Athanasiadis arrested at Tehran airport on June 19 . Journalist had been on assignment for the Washington Times . Spent the next 21 harrowing days in Iranian prisons accused of espionage . Released after intense diplomatic effort by Greek government .