Okay, silly headline out of the way, this could have been great, but instead, it turned into the usual America-good-Russia-bad oversimplification that's been going on and off for the last few decades. Promising start, but it was quickly undermined by poor dialogue, so-so animation--and it felt and looked rushed, cramming the source material into 84 minutes or so--and characters you couldn't really care about.
I get the twist on the usual DC characters--Batman, Green Lantern, and Wonder Woman--in this universe, but they weren't the least bit likeable. The voice acting was good, but if they'd had lines that mattered, it would have been more enjoyable.
Bottom line: read the graphic novel, or see the motion comic on other social sites. That's infinitely better than this version. DC usually puts out tremendous animated movies. Justice League: Dark, Gods and Monsters, Wonder Woman, and others are far superior examples of animation. This one isn't. It isn't a total disaster, but it could have been something great.