The point is 'Bubba that the several other countries like Israel that have had serious security problems over the years have handled it internally to the airlines their countries. They handled it quietly and effectively.
Very rarely have they run rough-shod over sovereignty issues and swaggered around demanding pointless actions by others.
When a foreign airline is outside of American airspace I would suggest that they continue to operate under the jurisdiction of the country of registration. Anything else is hegemony of the creeping kind.
And if you don't like it and ban us from your airspace then fine, we shall stop buying US Treasuries and you can paper the bathroom with your Reichmark-like dollars. This way trade wars commence.