That’s 13 Russians and 3 Russian entities.
The document filed in the US District Court for DC is HERE.
This appears to be a key but closely circumscribed moment in the Mueller investigation. No Americans are knowingly doing anything bad here. This is just the Russian campaign to manipulate social media etc. to shape an election, which we apparently believe they are continuing to do for 2018. This looks more or less like the end-game for that particular problem (though that does not mean that there won’t be more indictments.)
I have no idea, and I think this is generally the case, if an of these individuals or entities are in the US and/or can be actually arrested.
Some paraphrasing from the document, referring mainly to the first two counts, which are the big deal counts with all the jucy information in them, to give you an idea: Continue reading Mueller Indicts 13 people