Philippine President Rodrigo Duterte has threatened rivals with prison if they try to impeach him.
Duterte vented his anger late Thursday amid intense media scrutiny after the Philippines fell in line with Beijing’s explanation that a Chinese vessel didn’t intentionally hit a Filipino boat in the South China Sea on June 9.
Philippine Defence Secretary Delfin Lorenzana on Wednesday described the incident as "just an accident".
A top UN official and an Asian lawmakers' group this week called this an assault on free speech.
This comes as Duterte's popularity and mandate have been bolstered by a recent midterm election.

Iran studying deal to halt war as stalemate persists
WHO says suspected Ebola cases drop to 116 after hundreds ruled out
Israel strikes south Lebanon after holding off Beirut attack
At least 22 killed in heavy Russian attack on Ukrainian cities
Two killed in Kenya protest against US Ebola quarantine facility as Ruto defends plan
