US-supplied fighter jets destroyed a Cambodian arms depot as border clashes escalated.

Drone footage shows the F-16s operated by Thailand carrying out air raids on military targets in Banteay Meanchey province on December 15.

Thai officials said the airstrike aimed to cripple Cambodia's weapons capabilities, including rocket systems allegedly supplied by US rival China.

Fighting flared up earlier this month as the Thai army claimed Cambodian troops fired on a Thai engineering team building an access road in a disputed border area.

At least 15 Thai soldiers and one civilian have been killed since fighting resumed. In Cambodia, at least 11 civilians have died, while the number of soldiers dead is believed to be much higher.

Around 600,000 people have been displaced on both sides of the border.

Cambodia's assault has largely been wayward, unguided rockets fired indiscriminately into Thai territory, while Thailand has used precision drone strikes and fighter jet strikes on military sites.

Thai officials claim the ongoing border confrontations are a threat to national security, and the areas must be secured.