I would reject the notion that shifting public sentiment is a result of foreign influence campaigns, which is not to say it doesn't exist to an extent.

I've seen plenty of real information, from non-anonymous American journalists that I'm certain are the largest factor in any sea-change amongst Americans.

And despite the claim, I've yet to see solid evidence of large, pakistan-based accounts wielding massive influence on twitter. Most anonymous accounts that focus on current events tend to be located in America, Europe, or Canada from what I've seen.