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territorial dispute; territorial issue
両国間で領土問題が再燃した。
The territorial dispute flared up again between the two countries.
領土問題の解決に向けた交渉が行われた。
Negotiations were held to resolve the territorial dispute.
戦後の領土問題は複雑な歴史的背景を持つ。
Post-war territorial disputes have complex historical backgrounds.