Facebook says it has started to label Iran's Press TV, Russia's Sputnik, and China's Xinhua News Agency as “state-media”, adding it will later block them from running advertisements in the United States.

The social media giant said it will initially apply the label to about 200 pages belonging to these outlets.

The labels, Facebook said, will immediately start appearing on pages globally, as well as on news-feed posts within the United States.

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