Engines of diplomacyTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHofmann, Max09/27/2013September 27, 2013Russian Foreign Minister Sergei Lavrov and US Secretary of State John Kerry's agreement on Syria has led to talk of an improvement in US-Russian relations. But observers say the change is a matter of style, not substance.https://p.dw.com/p/19pdYAdvertisement