The US and other G7 countries vowed to defend Ukraine’s “sovereignty and territorial integrity” on Sunday’s 77th anniversary of Germany’s World War II defeat — as Russian despot Vladimir Putin boasted of erasing Ukrainian “Nazi filth.” Leaders of the Group of Seven — the US, Canada, France, Italy, Germany, the UK and Japan — made the pledge in a phone call with Ukrainian President Volodymyr Zelensky. Canadian President Justin Trudeau and First Lady Jill Biden also showed their personal support for Ukraine by paying separate surprise visits to the embattled nation Sunday. “Today, we, the G7, reassured President Zelenskyy of...