In today's General Audience, Pope Benedict XVI spoke about the Week of Prayer for Christian Unity which runs from January 18 to 25. He spoke about the history of the observance, which was begun 100 years ago by an American Anglican named Paul Watson, who later became Catholic. He emphasized the importance of prayer for "the grace" of Christian unity, remembering "the invitation to pray without growing weary that the apostle Paul addressed to the first Christians of Thessalonica" when he learned that there were "dissensions" among them.
Asia News has an article. Full translations are available from the Vatican and Papa Ratzinger Forum.