He doubts whether the U.S. could be an honest broker in the peace talks.

他很怀疑在和平谈话中美国能否起到调解人的作用。

An honest broker.

一个诚实的中间人。

Whenever the need arises, FAO acts as an "honest broker" by providing a forum for discussion.

一旦需要，粮农组织即作为一个"诚实中间机构"提供讨论论坛。

She suggested that the US could play a role as an honest broker in resolving the South China Sea claims.

她建议美国可以在解决南海主权争议问题上扮演一个诚实中介人的角色。

That enabled us to maintain our influence with them, but weakened our claim to be an honest broker with the Palestinians.

这让我国能保持对以色列的影响，但也削弱了我们美国声称是巴勒斯坦人的公正中间人的立场。