Ahistorian wants to better understand the causes and historical context of iraq's invasion of kuwait. what source would be most for him?

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be the transcripts of deliberations between the Americans in the war room leading up to the invasion, although these are classified. 
A recorded conversation between Iraq's generals the day before the invasion

The answer should be europe