New Delhi, Dec. 9 -- Cambodia's powerful Senate President Hun Sen on Tuesday vowed that his country would carry out a fierce fight against Thailand as a second day of widespread renewed combat between the Southeast Asian neighbors drove tens of thousands of people to flee border areas.

Fighting broke out following a skirmish in which one Thai soldier was killed Sunday night, despite a ceasefire that ended five days of fighting in July over competing territorial claims along their border, which resulted in dozens of civilian and military dead on both sides, and the evacuation of over 100,000 civilians.

Both sides vow to keep fighting

In a statement posted to Facebook and Telegram, Hun Sen claimed that his country had refrained from firi...