<iframe width="580" height="385" src="https://www.youtube.com/embed/mdadfCwWK0U?hl=en" frameborder="0" allowfullscreen></iframe> <br>In this episode of Talks at GS, US Secretary of Defense Mark Esper reflects on his service in the US Army, his views on events shaping America's national ... <br><a href="https://www.youtube.com/watch?v=mdadfCwWK0U">source</a>