Who personally intervened to make sure the Olympic stadium in Berlin posed no dangers?

The President of FIFA, Joseph Blatter says he is confident Germany has taken all measures needed to ensure a safe, clean and entertaining World Cup. He says the games will kick off on June 9 with a match between Germany and Costa Rica. In less than two months from now, FIFA President, Joseph Blatter, says the World Cup, for one month, will allow people to forget the misery of the world. Blatter is very upbeat about the games.He says he has no concerns about security or the possibility of a terrorist attack. Nor is he worried about safety of the 12 German football stadiums that will be used. He says he personally intervened to make sure the Olympic stadium in Berlin posed no dangers.