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During a powerful moment at the event, he called on every man in the room to stand, raise a fist, and take a pledge

They want the instrument to be classified as a "national treasure".

Gaming giant Roblox Corp says it will roll out compulsory facial recognition or ID checks from next month for players wanting to access its chat features.

It is one of the world's most famous unsolved codes whose answer could sell for a fortune -- but two US friends say they have already found the secret hidden by "Kryptos."

A portrait by Austrian artist Gustav Klimt fetched $236.4-million in New York on Tuesday, becoming the second most expensive artwork ever sold at auction.