Why bother paying anything? Let it go to court. Threatening annexation should fall under some kind of hostilities clause, national security clause, or force majeure clause. Anyway who's going to collect?
The US government can pay ~~MD~~ Lockheed, they're the ones who threatened annexation.
Edit... Fixed above, not sure why I had MacDonell Douglas on my mind...strange substitution for a company that no longer exists under that name.