And that suit will go exactly nowhere. Even if the World Court puts its anti-Americanism aside long enough to make a proper ruling (a huge if), Hugo will basically dare them to enforce it, and of course they won't. The ruling will then have about as much value as a UN resolution.
In the meantime, the Europeans, the Russians and the Chinese will be more than happy to keep Hugo's credit line open to allow him to keep buying the votes he needs to stay in power. Oh sure, eventually it'll all come crashing down - communist systems always do. But we're probably talking decades, not just a couple of years. Look at how long Castro has held on, and look at how long it took for the Soviet Union to implode.
No, it will be sooner than later. There is a very volatile situation there, and a revolution is as sure as the sun coming up.
Castro is a entirely different situation. The populace there, never did get out from under the dictator thumb and socialism made too much sense to fight. Add to this the isolation of the island.
Venezuela is a different animal, and will not be stable much longer. A power play is coming, and it is the quiet period before the storm.