MANILA - President Rodrigo Duterte said Sunday he will not stop his war against illegal drugs even as he faces an impeachment case and possible prosecution before the International Criminal Court's (ICC).

"I will not be intimidated and I shall not be stopped by just what International Criminal Court, impeachment. If that is part of my destiny, it is my destiny to go," he said in a speech before leaving for official trips to Myanmar and Thailand.

"Maybe God gave me only 2 years and 6 months, 1 year and a half to be President of this country, fine. Basta let it not be said na hindi ko ibinigay ang ipinangako ko."

Duterte said the fight against criminality "will continue and will be brutal" against suspects who fight law enforcers.

But he also said that soldiers and policemen have been trained not to follow "illegal orders" to kill suspects who surrender peacefully.

Earlier Wednesday, former soldier turned Magdalo Representative Gary Alejano called for Duterte's removal for alleged high crimes, betrayal of public trust, and abuse of power.

Another case may be lodged against Duterte before the ICC if Alejano's complaint fails to muster in a Congress dominated by allies of the President, international law expert Tony La Viña said.