In comparing the American military defense spending to China's, former US admiral and best-selling author James Stavridis is concerned that the US is too focused on legacy systems. In a conversation with Ian Bremmer on GZERO World, he discusses the role of the private sector in the development of US defense capabilities and the need to move towards higher end technologies, which he says China has already done. "They get to make decisions and move out with big land armies, tanks, aircraft carriers in ways we are retarded from doing by the messiness, as wonderful as it is, of our democratic system," Stavridis points out.

Watch the episode: What could spark a US-China war?