What does the newly-leaked information printed about some world leaders and their private monitary accounts mean to the rest of the world?

This leaked information, put out by the German press has been discussed now by many news sources as being more explosive than William Snowdon’s informational bombs dropped years ago concerning the US.
WHY would this be true?
Do you believe that this information will cause enough flotsam/jetsam to create major changes for those involved, let alone their countries?

See if this helps-
>>>>>Quick and comprehensive break-downs of overall leadership panic :

•Tax havens of the world’s rich and famous revealed in huge data leak
http://dailym.ai/1osUgP9
via http://dailym.ai/ios

•The offshore money trail that leads from Vladimir Putin’s best friend
http://dailym.ai/1RHpri3
via http://dailym.ai/ios

What do YOU understand this to mean?

What happens to these politicians, rulers, etc., and their control now that this information has been leaked?
Some involved (exposed, if you will) have vowed to kill the person(s) who made this information public.
Why?