This Feb 19, 2020 photo shows the Pentagon seen from an airplane over Washington D.C., the United States. (LIU JIE / XINHUA)

WASHINGTON - The US State Department has approved the potential sale of F-16 aircraft sustainment and related equipment to Pakistan in a deal valued at up to US$450 million, the Pentagon said on Wednesday.

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The principal contractor will be Lockheed Martin Corp, the Pentagon said.