frontier

the border area between two or more countries ชายแดน

The problems of illegal migrants and drugs in this area appear not to be serious,’’ a source in the Surasi Task Force which is in charge of security along the western frontier told the Bangkok Post.

 Among them will be soldiers deployed in the Stryker, a relatively quick, armoured vehicle that can roam across the vast areas that span the frontier between Afghanistan and Pakistan.

The Kameng River is in the state of Arunachal Pradesh on India's northeastern frontier.