U.S. officials are trying to figure out who was behind the leak of classified data.

The New York Times obtained a secret document on the Ukraine war that addresses four hypothetical scenarios, including the death of Putin. The document predicts that the war will be prolonged, and explains that each of these scenarios, which is difficult to predict, may lead to a different outcome, as it may. lead to an escalation of the conflict or the launch of negotiations that end it, and may have little impact on the course of the war.