2 sentences

1. 由于这场战争，两国已经断绝了外交关系。

   yóu​yú zhè cháng zhàn​zhēng, liǎng guó yǐ​jīng duàn​jué le wài​jiāo guān​xi.

   Because of the war, the two countries have severed diplomatic ties.

   Source: Dong Chinese Dictionary

2. 由于没有子嗣，他担心家里的香烟会就此断绝。

   yóu​yú méi​yǒu zǐ​sì, tā dān​xīn jiā​lǐ de xiāng​yān huì jiù​cǐ duàn​jué.

   Because he had no heirs, he worried that his family line would end.

   Source: Dong Chinese Dictionary