(Al Jazeera English News Headlines: July 15, 2010) An Iranian nuclear scientist who had been missing for a year made a triumphant return home to Iran. While Shahram Amiri claims to have been kidnapped and tortured by the CIA and Saudi intelligence in Saudi Arabia, U.S. officials have disputed Amiri’s story, suggesting that Amiri was a willing defector from Iran who changed his mind. In Iraq, bomb attacks in Baghdad and Tikrit killed eight people. NATO troop reinforcements are arriving in the southern Afghanistan city of Kandahar, preparing for a major summer offensive against the Taliban.