Israel deploys nuclear weapons on german submarines.

Der Spiegel has reported that German-built submarines for Israel are capable of carrying nuclear weapons.
Why did the German government not forbid this?

Why is there no call for sanctions against Israel, which has been stockpiling nuclear weapons for decades, as there has been against Iran? 
We all know the answer!
Another question is: will the Irish government make a protest to both Germany and Israel over these dangerous new developments?