-- The Dems must be desperate to cite a Trump-Putin connection. --
It's pure speculation. They cite some unnamed experts who see metadata in the source documents that indicate a computer in Russia is involved in storing, serving or transmitting the contents.
You can bet the "speculation" will morph into fact by the MSM. And it is a distraction. The issue is the substance in the emails and whether they are authentic, not how they were unearthed. If there was no there there, it wouldn't matter how they were discovered.