S raised some interesting questions. How about posting my answers. Among other things, sanctions are feel-good actions that rarely work, but make the politicians feel like they've 'done something.' They are also frequently a way for the rich and powerful to game the system like BIG OIL did with Saddam Hussein and Oil for Food. Children went hungry while Saddam and his family and some fat cats in the US got rich.
Chief suspect in Bangkok bombing case arrested (dpa)
from the article: U.S. warns Iran: Meet nuclear obligations or face 'next step'