You really have to stop saying that. But think of the long-term affects. More destruction of the ozone layer. If strategically placed, the bomb could create a giant cloud of dust and smoke about the world, bringing another ice age.
Actually, there is a volcano somewhere in the US that could burst at any moment. They have a lot of sensors and things on it so they can monitor its status, and they estimate that it could cause the next ice age through major debris. They could bomb that. I'm sure a fusion bomb could take that out.
Their are a lot of things they can do with it. You just have to use your brain.