Looming ‘lese majeste’ court ruling holds royal reckoning for Thailand’s most controversial former prime minister Thaksin Shinawatra.

Bangkok, Thailand – A court is poised to decide whether Thailand’s most consequential and controversial political figure of the past 25 years, Thaksin Shinawatra, insulted the country’s revered monarchy, a crime that can land a culprit in jail for up to 15 years.

The charge, under Thailand’s strict “lese-majeste” royal defamation law, stems from an interview the 76-year-old business tycoon and former prime minister gave to a South Korean newspaper in 2015 regarding a military coup that toppled his sister and then-Prime Minister Yingluck Shinawatra in 2014.

Though holding no official role in government, Thaksin remains a towering figure bearing over Thailand’s stormy politics, and the verdict on Friday will test the state of his long-fraught relationship with the country’s powerful royalist establishment.

“The prosecution is of great political significance,” said Verapat Pariyawong, a Thai law and politics scholar at the School of Oriental and African Studies (SOAS) University of London.