这句话从语法上怎么讲?

有一读者问: 有这样一句:

Politically, the deftness with which the ANC has neutralised the white right stands in striking contrast to the confrontational approach it has taken with Chief Buthelezi.

这里的it指代什么? 这句话从语法上怎么讲?

it显然指the ANC。现将这个句子扼要地分析如下:

Politically是一句子副词,用作方面状语。

the deftness with which the ANC has neutralised the white right是全句的主语:with which引导一个定语从句,修饰the deftness。

stands in striking contrast to可看作一短语动词,用作谓语。

the confrontational approach it has taken with Chief Buthelezi是上述短语动词的宾语; it has taken with Chief Buthelezi是一定语从句(其前省去了which或that),修饰the confrontational approach。