[mmooss]

I can't think of any examples of that and don't see that in the wars listed above. Destabilized countries are bad news for entire regions and can become havens and recruiting grounds for terrorists, criminals, etc. And those things spread across borders.

The idea that the Iranians will act on his wishes is a fantasy of someone who wants to win without paying the costs, as a freebie.

[pfannkuchen]

Destabilized nations are good if you are a nearby nation wanting to expand and you expect those other nations to oppose you.

[mmooss]

The US isn't a nearby nation and doesn't want to expand by seizing countries anywhere, especially in the Mideast.

None of Iran's neighbors - e.g., Iraq and Afghanistan - want to or have any capacity to invade Iran. A destabilized Iran is a nightmare for them.