I didn't say I was for sanctions, I said I don't think its quite equivalent to an act of war. The analogy I used was a town with a bunch of white people and one black family. Every white family refuses to trade with the black family. That's clearly, not even questionably, immoral but its not an act of aggression against the black family. Even if some white families threatened not to trade with other white families if they didn't boycott the black family, that still wouldn't be an act of aggression per say. However, if the black family resorted to crime because otherwise they would starve to death.... the white family who was victimized would TECHNICALLY be defending themselves but they still have themselves to blame for a stupid policy, if that makes sense.
I admit I don't understand ALL the details on sanctions. I did kind of give Rand Paul a pass there because even though I hate them I didn't think they were quite as bad as going to war, and I still don't. It was the vote to potentially pursue aggressive war against Iran that made me stop supporting Rand. But I still don't like sanctions.
If the sanctions involve the use of force to enforce, such as a blockade, than I'd agree with you and Ron Paul that its an act of war. Until then, I don't.
I'm not sure I see a problem with purely symbolic actions like boycotting the Olympics, I mean ideally that would be an individual choice but on principle I personally probably wouldn't want to participate in the Olympics in a tyrannical country. I'm not sure how that's the same as normal sanctions that hurt the poor, however.