ADJ [ADJ n]包罗万象的；影响一切的 You use overarching to indicate that you are talking about something that includes or affects everything or everyone. 包罗万象的；影响一切的 [formal]
The overarching question seems to be what happens when the US pulls out?.
首要的问题看来在于美国撤军后事态将会如何。
Home ownership has been an overarching and innate desire of the British.