Putin most certainly does not protect non-Russian Orthodox, or should I say, non-KGB/FSB churches. Evangelical, baptist, etc. church plants are harassed and attacked and are subject to indiscriminate persecution by the FSB. Many, in fact, have been closed, due to such harassment from the authorities.
Even if you’re right, which I seriously doubt, and Russia under Putin has only ever tried to protect Orthodox Christians, that would be one more Christian denomination than the United States has tried to protect over the past quarter century, wouldn’t it?