noun
effective control; de facto control
Legal and political term for exercising actual authority over a territory, regardless of formal sovereignty. Often used in international relations and territorial disputes.
その島は隣国によって実効支配されている。
The island is under the effective control of the neighboring country.
実効支配の状況は国際法上、複雑な問題を引き起こす。
The situation of effective control raises complex issues under international law.