An in-depth look at the relationship between Donald Trump and Vladimir Putin. This bit has been making the rounds on Twitter:

In 2008, according to “Dark Territory,” a history of cyberwar by Fred Kaplan, Russian hackers accomplished a feat that Pentagon officials considered almost impossible: breaching a classified network that wasn’t even connected to the public Internet. Apparently, Russian spies had supplied cheap thumb drives, stocked with viruses, to retail kiosks near NATO headquarters in Kabul, betting, correctly, that a U.S. serviceman or woman would buy one and insert it into a secure computer. In the past decade, cyber tactics have become an essential component of Russia’s efforts to exert influence over its neighbors.