In this issue Ron Smith and Ali Tasiran quantitatively study the onset of peace after war. Sam Perlo-Freeman and Jennifer Brauner write on the link in Algeria between natural resource rents and levels of military expenditure. J. Paul Dunne and Jurgen Brauer mine new data to re-examine the impact of the 9/11 attack on the global airline industry. The issue also contains the final installment of our trilogy on the Austrian school's views on war and peace, this piece here by William Anderson, Scott Kjar, and James Yohe. (Parts I and II were published in vol. 5, no. 1 and vol. 6, no. 1, respectively.)