请教1014上的一道填空题，谢谢！

Bianca999

Drill 7
12.The editorial, though intended to ____(i)____ the current administration, inadvertently ____(ii)____ several claims  made against the regime suggested as a preferable alternative, effectively ____(iii)____ any plans for a change in leadership.
答案是： impugn， substantiated, castrating

对于整个句子的逻辑关系，有点看不懂，特别是inadvertently substantiated several claims  made against the regime suggested as a preferable alternative这里，这里是made against the regime 和 suggested as a preferable alternative 对claim的修饰吗？整句看不懂……

求高人指点！谢谢！

Bianca999

明白了，谢谢版主

cptiger

我的理解是这样的
这篇社论，尽管是想指责现行的行政管理，不经意地证实了一些说法，这些说法反对了那个（本视为是更好的替代选择的）政体，导致了那些改变领导层的计划流产了。