真心跪求这个句子结构，特别是后面的amongwhom,好像没见过这种用法

It insists that economic coordination should involve all 27 members of the EU club, 
among whom there is a small majority for free-market liberalism 
and economic rigors; in the inner core alone, Germany fears, a small majority favour French interference.

It主 insists谓 that economic coordination should involve all 27 members of the EU club宾语从句,
among whom there is a small majority for free-market liberalism
and economic rigors定语从句; in the inner core alone, Germany fears, a small majority favour French interference另一个分句.
among whom=among the 27 memebers of the EU club在27个成员中

搜一下：真心跪求这个句子结构，特别是后面的among whom,好像没见过这种用法