Which of course is one of the main reasons many on the right support a very strong stance. Why?
The whole reason Russia is willing to make that move, is because they do not believe we will respond. No one openly starts a war they believe will cause them to be anilated by a response.
Just like a criminal never commits a crime they believe could result in them being shot.
Saddam for example, only invaded Kuwait because he though we wouldn't respond. He only screwed with the U.N. because he knew Clinton would only fire a few missiles here and there. The only reason he allowed the U.N. inspector back into Iraq after 2000, was because he thought Bush might do something.
Ultimately, nuclear war will undoubtedly be started by someone thinking the other side won't do anything. Which is why political right believe in having a very strong showing, to make other understand that's not the case. Sadly, we're not showing that, and they do believe we won't do anything.
Just look at all the leftists here, trying to blame everything on oil. That gives are enemies more reason to believe we won't be willing to fight.