An escalation of violence has prompted thousands of civilians along the Thailand-Cambodia to flee.

Thailand launched air strikes against Cambodia on Monday as a new wave of fighting erupted between the southeast Asian neighbors, marking the potential collapse of a peace plan presided over by US President Donald Trump just two months ago.

By Panarat Thepgumpanat and Orathai Sriring BANGKOK/PHNOM PENH, Dec 9 (Reuters) - Thailand said it was taking action to expel Cambodian forces from its territory on Tuesday, as renewed fighting between the two Southeast Asian neighbours spread along the disputed border.

Emergency crews are racing to reach survivors and recover bodies after catastrophic floods and landslides in Indonesia, Sri Lanka, Thailand and Malaysia.

Armed clashes between Thailand and Cambodia entered a second day on Tuesday, both sides said, in defiance of calls from the United States to stop fighting and adhere to a months-old Trump-brokered peace deal that now looks on the brink of complete collapse.