Explore trust region methods and proximal policy optimization in this 22-minute video lecture from the CS885 course at the University of Waterloo. Delve into gradient policy optimization, Kullback-Leibler Divergence, and the Trust Region Policy Optimization (TRPO) algorithm. Learn about constrained optimization and the simplified objective of Proximal Policy Optimization (PPO). Examine empirical results and illustrations to reinforce your understanding of these advanced reinforcement learning concepts. Access accompanying slides from the course website for a comprehensive learning experience.