The US government holds for itself the right to kidnap, torture, and assassinate around the planet ad lib and without any cause, anybody it so chooses to target. Last month it went after a top Iranian official who the US kidnapped from Turkey.
The reason it chose this particular individual is fairly obvious. They plan to use this man to use his supposed future ‘testimony’ as reason for targetting Iran for war. They can claim that he spilled the beans about what the US government will claim is Iranian interference in the affairs of Iraq and Lebanon, plus they will use his ‘testimony’ as evidence that Iran is planning to use nuclear weapons against Israel.