Speaking as a Democrat, a huge part of the problem worldwide is that no one takes Obama seriously as a world leader. He has shown zero leadership on any international conflict and has waffled on the current ones the US is involved in. OK so he got bin Laden, great, and then?
Putin is no dummy, he knows Obamas approach to these things..let out a howl and then back off.
Look at what was said about Assad in the early days of that conflict. What happened? It got worse and the extremists took the initiative because we didn't have the spine to help them when they asked for it. Look at the two basket cases we "fixed", Iraq and Afghanistan. They will be ruins for decades to come because of our misadventures there. And all for what?
Show some leadership, develop a spine and maybe tyrants will think twice about before they do anything.