At least 49 inmates have been killed in a prison riot in northern mexico. We have to detected gravitational waves. We did the and landmark discovery that could change the way scientists think about our universe. We begin with the war in syria. World powers have agreed to take steps to scale back violence in syria after having talks in munich. Hopeful it will happen in a week but it will not happen with i. S. I. L. And alnusra. Supplies will be sent by air to some besieged cities as early as next week. All of these steps will be monitored by a u. N. Task force headed by russia and the u. S. Our diplomatic editor james bays reports reporter 19 delegations, the sponsors of International Peace efforts in syria gathering in an effort to get things back on track. The most important meeting happened several hours earlier on 915th floor of the same munich hotel. This is where Russian Foreign minister and john kerry came facetoface. If you look at those face , you can tell from the very start t