intercede

1. V-I If you intercede with someone, you try to persuade them to forgive someone or end their disagreement with them. 代爲求情; 調解[正式]

They asked my father to intercede with the king on their behalf. 他們請我父親代他們曏國王求情。

It has also asked Britain and the United States to intercede. 它也請了英國和美國出麪調停。