BANGKOK ~ Thailand, which just ended a five-month ban on the video-sharing site YouTube, now wants to block clips that accuse a top royal adviser of masterminding last year’s coup, an official said.

“The video clips pose a threat to our national security,” said Yanaphon Youngyuen, head of the justice ministry’s cyber-crime department.

The two video clips, narrated in Thai with English subtitles, accuse General Prem Tinsulanonda, 87-year-old adviser to the widely respected King Bhumibol Adulyadej, of masterminding the coup in September 2006.