OTTAWA — Two months after Canada lost the election to the United Nations Security Council, the country’s new ambassador was there anyway, speaking frankly about the Syrian civil war. He wasn’t making many new friends. Bob Rae, the career politician appointed as Canada’s new UN envoy in New York, was addressing a special session of the UN’s most powerful body this past Tuesday, on behalf of Australia and New Zealand. Russia intervened in Syria’s nine-year-old civil war in 2015, to support a longtime ally while prolonging a conflict that has left 400,000 people dead. Russia is also one of the five permanent members of the Security Council, with China, the United States, Britain and France.