Which of the following thinkers argued that peace prevails once one state establishes primacy, as the hegemonic state lacks the need to fight and other states lack the ability?

Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): The terrorist attacks of September 11, 2001 (9/11) fundamentally impacted international security and reshaped US foreign policy. Reason (R): Globalization and modern technology have empowered non-state actors to wage asymmetric warfare across borders. Choose the correct option:

In which of his works did Kenneth Waltz construct the 'Levels of Analysis' framework for international relations?