In an historic speech in Hradcany Square, Prague, President Barack Obama declared "America's commitment to seek the peace and security of a world without nuclear weapons." Read his full remarks from whitehouse.gov [2], download the pdf [3] or watch [4]the speech here.
Links
[1] https://ploughshares.org/file/542
[2] http://www.whitehouse.gov/the_press_office/Remarks-By-President-Barack-Obama-In-Prague-As-Delivered/
[3] http://ploughshares.org/sites/default/files/newss/Palm%20Sunday%20Speech.pdf
[4] http://news.bbc.co.uk/1/hi/world/americas/7984353.stm
[5] https://ploughshares.org/sites/default/files/newss/Palm%20Sunday%20Speech.pdf