It's difficult to be the King's own son rather than his adopted son. That's Hun Sen. Samdech Hun Sen, as an adopted son, has the right not to listen to the King. I, as his [natural] son, don't have such a right.
Matthew Grainger (4 September 1998). Relaxed Hun Sen holds the royal key. Phnom Penh Post. Retrieved on 2 September 2015.