International laws are enforced by the nation states effected and through organisations such as the EU and UN, and through co-operation initiatives among some nation states, for example Interpol.
In regard to the first point, most countries have agreements and treatys in place with each other so that things like international law are in enforced and that there is protocols set up to cover any thing that happens. That is also why we have ambassadors and diplomatics around the world, so if a happens to a citizen of our nation or effects our nation in general, we will have treaty's, protocols, and diplomatics that will work with the other nation state to enforce the balance of power. That is why things like the UN, the EU and such are so very very important.
Our injury lawyers understand that our clients are trying to deal with devastating injuries and losses; therefore, we do everything we can to help ensure that our clients and their families are kept informed and are at ease throughout each phase of the legal process. We give our clients the time to focus on their recovery, not on the intricacies of their legal matters.