Welcome to the Monitor's Web interactive, "Perspectives on Terrorism: Defining the Line." This project works like a series of chapters. You can click to any section using the menu in the top right-hand corner. But this site is best explored by clicking the "Continue" link at the bottom of each page.

First, read terrorism expert Brian Jenkins's commentary to learn what he thinks terrorism is – and is not.

Next, choose your own definition for terrorism and apply it to five possible "gray areas." Test your judgment with our expert feedback.

Then, listen to a soldier blinded in a bomb attack discuss what it takes to forgive. And listen to the man who planned the attack share his perspective on the difference between freedom fighting and terorism.

Finally, explore our guide to more coverage of terrorism from the Monitor and around the Web.

Continue: 'Where I draw the line'