 You're listening to BBC Trending. I'm Mike Wendling. Coming up, we've spent months tracing the origins of a series of websites designed to spread fake stories about Ukraine's leaders and US politics. It's an assembly line of propaganda and disinformation production. And the trail leads to an American in Moscow. It's hard to know whether or not he truly believes the narratives he's propagating, but it's clear the Russians are benefiting. That investigation coming up after the latest world news.