SURIN, Thailand -- Cambodia's powerful Senate President Hun Sen on Tuesday vowed 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 after a skirmish Sunday in which two Thai soldiers were injured, derailing a ceasefire that ended fighting over competing territorial claims in July. Days of fighting then left dozens dead on both sides, and forced the evacuation of over 100,000 civilians.

In a sign that neither side was willing to back down, Thai Prime Minister Anutin Charnvirakul said Tuesday that Cambodia had not yet contacted Thailand about possible negotiations and the fighting would continue.

"We've got to do what we've got to do," he said. "The go

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