Swiss President Ignazio Cassis said that “the unprecedented military action by Russia on a sovereign European state” was prompting his country to join other European states and the global community to freeze the Swiss-held assets of Mr. Putin, Russian Foreign Minister Sergei Lavrov, and more than 360 other Russian individuals sanctioned by the EU last week. Calling a new U.S. and European openness to supplying Ukraine with critical weaponry “excellent,” Mr.