Airstrikes underway in Northern Syria

07:39

The Turkish military has unleashed an offensive across the border in Northern Syria, escalating tensions in the Middle East. Kelly Magsamen, who served on the National Security Council in both the Obama and Bush administrations, former U.S. Ambassador to Iraq Christopher Hill, and NBC National Political Reporter Carol Lee join Stephanie Ruhle to break down what this means for the Kurds and how Trump is defending his decision not to back them up.