Many say Turkey's direct involvement is critical to the coalition's fight against ISIS, but Turkey is asking for more protection from coalitions forces near its border with Syria. Understanding Turkey's role in the region and the militant group's growing reach.

Last week, more than 7 million people watched a video made by a young woman with terminal cancer who explains her wish to control how and when she dies. The ongoing debate over terminally ill patients who want to end their lives and how to improve palliative care.