NGO Monitor has released a list of Frequently Asked Questions related to 'lawfare' against Israel. It's a good primer on the ways international law is abused to tie the hands of Western nations (the same techniques could easily be turned against any other law-respecting country). The effort of these NGO's is completely asymmetrical. No such efforts are under way to use the law against the terrorist groups Israel is trying to protect itself from: The NGO Front in the Gaza War: Lawfare Against Israel