This year is the 40th anniversary of the John Lennon-Yoko Ono classic, "Give Peace a Chance." To commemorate the event, the Plastic Ono Band and its record label are re-publishing the song through Itunes, and donating the proceeds to the UN Peace Building Fund. 

The Peacebuilding Fund supports the Peacebuilding Commission, which was set up in 2005 to help countries manage transitions from conflict to peace. The commission manages what might be considered post-peacekeeping activities in places where there may no longer be a need for external armed forces to keep apart belligerents, but there is still a need for coordinated international efforts to plant the seeds for a more durable peace. For example, the Peacebuilding Commission is active in Sierra Leone, working on efforts like justice sector reform and youth employment.   

The commission is still pretty new, but was created because the international community recognized that it had an interest and responsibility to shore up lasting peace efforts in restive parts of the world.