BERN (Reuters) – Ukrainian President Volodymyr Zelenskiy urged Switzerland on Saturday to crack down on Russian oligarchs who he said were helping to wage war on his country from the safety of “beautiful Swiss towns”. In an audiolink address to thousands attending an anti-war protest in Bern, Zelenskiy thanked Switzerland for its support since Russia launched its invasion of Ukraine, but also had clear language about the Swiss financial sector. “Your banks are where the money of the people who unleashed this war lies. That is painful. That is also a fight against evil, that their accounts are …