Russian-linked Facebook ads targeted Michigan and Wisconsin

(CNN) – A number of Russian-linked Facebook ads specifically targeted Michigan and Wisconsin, two states crucial to Donald Trump’s victory last November, according to four sources with direct knowledge of the situation.Some of the Russian ads appeared highly sophisticated in their targeting of key demographic groups in areas of the states that turned out to be pivotal, two of the sources said. The ads employed a series of divisive messages aimed at breaking through the clutter o