US
Britain's monarch turns 90 on April 21 next year and the palace has organised a public celebration at Windsor Castle
The charge carries up to seven years in jail and has been controversially wielded by the junta against its critics
Prosecutions under archaic law have skyrocketed since Thailand's military seized power in coup in last year
87-year-old king has been in Bangkok's Siriraj Hospital since being re-admitted in May
He was sentenced to 10 years on each count with the 60-year jail term halved after he pleaded guilty, says his lawyer