Here's a new, free course from Stanford University. Taught by James Sheehan, the History of the International System (iTunes) offers a historical view of international politics in the 20th century, exploring how international players have attempted to project their will and protect their interests, all while negotiating fluid and not always manageable external forces. The course looks back at communism, fascism and liberalism, then moves through the Cold War to the present day, and ends with current events in Iraq. An important historian and one of Stanford's finest lecturers, Sheehan was recently President of the American Historical Association. So far four lectures have been posted (see here), and there will be more to come.
NOTE: This course has been added to our collection of Free Online Courses, where you can find about 120 top-notch courses.