The major German services sector union Verdi is demanding that the government exhaust all options in the takeover battle for Commerzbank by Italian rival UniCredit. “The government must declare Commerzbank a part of Germany’s critical infrastructure,” said senior Verdi official and Commerzbank supervisory board member Stefan Wittmann. He said that Commerzbank plays a crucial role in financing Germany’s small and medium-sized companies. He cast UniCredit’s bid for a tie-up in stark terms, saying the aquisition “would destroy Commerzbank.” Wittmann spoke at a rally in front of the Commerzbank he…