"Conflicts involving nonstate actors are a key reason that the world is presently witnessing a level of conflict not seen in 80 years," Paul Poast writes.
The flood of impoverished migrants camping in Chicago awaiting government processing for asylum has put a roadblock up in front of a very different class of hopeful immigrants.
Hailed as a way to reduce traffic and pollution and to improve city transit systems, cordon pricing exists in several cities around the world. Could it work in Chicago?