Trouble With Binding Targets

Stephan Harper now says that he supports a climate treaty that would have binding targets for every nation. The problem with this is how you plan on placing binding target onto sovereign nations. Suppose a nation agrees to pay a fine if they do not lower their carbon emissions below a certain level, and then come time, they have not lowered their emissions levels enough to meet the target and refuse to pay the fine. What do you do? You can through on some trade restrictions, but they will likely hurt you as much as the nation you're targeting. You can bomb them, but that probably won't go over all that well. The truth is that there isn't a whole lot that you can do, and that Harpers new found greeness could be nothing more than lip service. Here's the link