I might also add that even if Geoblocking prevented the site to...

I might also add that even if Geoblocking prevented the site to crash from external attacks, there's nothing stopping an attack from inside the country with this setup. It's like trying to stop a terrorist attack by stopping anyone coming into the country... It doesn't stop an attack from anyone already within it.

Fact is the IBM failed to design this properly (or project managers didn't want to spend the correct amount of money on it), regardless of outcome.