Pope Francis invites us to participate in a day of prayer and fasting for peace in Syria, to be observed on Saturday, September 7, 2013. Here is a quote from Pope Francis:

To this end, brothers and sisters, I have decided to proclaim for the whole Church on 7 September next, the vigil of the birth of Mary, Queen of Peace, a day of fasting and prayer for peace in Syria, the Middle East, and throughout the world, and I also invite each person, including our fellow Christians, followers of other religions and all men of good will, to participate, in whatever way they can, in this initiative.

Here are links for more information, followed by a video of the pope’s words:

Full Text of Address by Pope Francis
U.S. Bishops Joins Pope Francis’s Call for Day of Fasting and Prayer for Peace in Syria
U.S. Bishops – Issues and Action – Syria
Pope’s Vigil for Syrian Peace Expected to be Biggest in Decades