The new trailer for Michael Moore’s latest documentary Where to Invade Next (above) positions the guerrilla filmmaker as “America’s secret weapon” and “the only one who can save us.”

The film tracks Moore as he travels around the globe and explores social programs and policies that work well in other countries (while criticizing school lunch and highlighting other problems in the U.S.A.).

Luckily, these days, Moore is feeling like a “crazy optimist.” As Moore explains in the trailer, “Three years ago, gay marriage in the United States was outlawed. Now it’s the law of the land. It really proves anything can happen.”

The film, which recently landed on the Oscar documentary short list, opens in theaters Dec. 23 from the new, still unnamed company formed by departing RADIUS executives Tom Quinn and Jason Janego and Drafthouse Films CEO Tim League.