In part two of this episode. When humanitarian workers go abroad they do so with the idea of helping those in need. Anything else, politics, greed, self-interest, it's all supposed fall by the wayside. Trouble is that it often does not. Every day aid workers around the globe have to make challenging, controversial, life-altering decisions. Doctors Without Borders, is marking its 40th anniversary with a collection of stories about life in the field.