September 23, 2014 -- Updated 1614 GMT (0014 HKT)
If the U.S. has to send combat soldiers to fight ISIS, we had better be prepared for even more veterans with PTSD, writes Carol Costello
Mark Suzman says it's not enough just to try to lessen climate change; we need to help farmers adapt to what's already happened
Gayle Lemmon says the question now is how to translate all the high-profile feminizing into real gains for women.
Despite fears of "mission creep", there are many factors that limit the size and scope of the battle against ISIS, says Julian Zelizer.
Bill Clinton on ISIS
Clinton distinguishes between U.S. strategic response & the reaction ISIS wants.
On the news
Steven A. Holmes