You note that Ushakov is "as close to Putin as you can get with respect to foreign policy matters and especially the United States,”
If his aide was indeed the spy, it raises a number of questions in relation to the Russia Investigation.
And if this asset was so highly placed, how is it that Russia was able to hack the DNC servers?
As a frequent contributor to many early - and seminal - WAPO stories, your expertise here would be appreciated.