[annalex]

When individuals -- in this case, the owners of a corporation -- are harmed in a foreign land, our government has no duty to intervene if the individuals accepted the risk inherent in foreign investment. However, if our government chooses to act in retaliation, it would be justified as defensive application of force on behalf of its citizens. And that's what Peikoff is suggesting: if a country positions itself as our enemy in the war on terrorism, then our govenrment might just as well repossess the oil companies' property there.

[Demidog]

However, if our government chooses to act in retaliation, it would be justified as defensive application of force on behalf of its citizens.

No it would not be justified as our jurisdiction does not extend beyond our borders. What you are suggesting is justified is absolutely not libertarian.