By Michael Shields and Silke Koltrowitz ZURICH (Reuters) -Switzerland will adopt all the sanctions that the European Union has imposed on Russian people and companies and freeze their assets to punish the invasion of Ukraine, the government said in a sharp deviation from the country’s traditional neutrality. “We are in an extraordinary situation where extraordinary measures could be decided,” President and Foreign Minister Ignazio Cassis told a news conference in Bern on Monday, flanked by the finance, defence and justice ministers. Only history would tell if such a move could happen again, he…