The World's next Genocide?

As we wrap up our study of Catholic Social Teaching, one of the greatest challenges we face is how to apply what you have learned the world.  Our world is a place that currently suffers from war, poverty, injustice and inequality.  It is also a world of hope, new life, joy and opportunity.  As you read this article about the current situation in Syria, how does Catholic Social Teaching inform your understanding of how the international community must respond?  Do you think that CST us currently a guide for decisions on an international level?  Is it realistic or possible to use CST to guide our decisions as individuals and as a nation?  Why or why not?