weakened border; porous border; open border
Refers to a border that is not strictly controlled, allowing relatively free movement of people or goods. Often used in political or sociological contexts. Compare with 無国境 (borderless).
See also: 無国境
The EU is promoting the weakening of borders.
Discuss security in an era of porous borders.
Compound of 脱 (だつ, 'de-', 'dis-', 'escape from') and 国境 (こっきょう, 'national border'). The exact origin is uncertain; it appears to be a modern coinage for discussing border policies.