Saudi Arabia's leader on Tuesday downplayed the kingdom's role in the 9/11 attacks. But an ongoing federal court case is revealing new details about Saudi officials' alleged ties to the terror plot — and the potential liability that government faces. • The lawsuit unearthed evidence showing one Saudi official — who acknowledges aiding two men who became hijackers — made a drawing of a plane and a mathematical formula that allegedly could have been used to fly into the World Trade Center.

Why it matters: A crucial U.S. ally, Saudi Arabia's oil-rich kingdom was the first foreign sovereign to be sued in U.S. federal court under the Justice Against Sponsors of Terrorism Act of 2016 for the attacks that killed 2,977 people. • For 22 years, the kingdom has fought the New York lawsuit, the l

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