Courage comes in many forms, some of them plainly apparent and others seemingly unlikely. Ironically, it’s those emboldened but unsuspecting heroes who often end up achieving the greatest victories in their endeavors, even when up against formidable opponents. And now the makings of such an implausible scenario provide the focus for an insightful first-person documentary, one in which an unassuming, mild-mannered David matter-of-factly takes on a daunting Goliath and does so with an unintimidated sense of aplomb and wry tongue-in-cheek humor. Find out more in a review of the new, delightful but troubling documentary, “Mr. Nobody Against Putin,” on the next edition of The Cinema Scribe.