Question: The 2008 Indo-Pakistani standoff, which involved strained relations between Pakistan and India for a period of time, was related to terrorist attacks by which organisation?
Sentence (from "2008 Indo-Pakistani standoff"): After the 2008 Mumbai attacks, Pakistan and the ISI were believed by India to be directly responsible behind the attacks, leading to strained relations between the two countries for a period of time.
Relevant evidence: Yes