liǎng / guó / yīn / biān / jìng / zhēng / duān / shī / hé / guān / xì / yí / dù / shí / fēn / jǐn / zhāng

两国因边境争端失和，关系一度十分紧张。

The two countries became estranged over a border dispute, and relations grew very tense.