President Obama Signs the New START Treaty

President Barack Obama signs the instrument of ratification of the New START Treaty in the Oval Office, Feb. 2, 2011. Participants include, from left: Chairman of the Joint Chiefs of Staff Admiral Mike Mullen; Energy Secretary Steven Chu; Defense Secretary Robert Gates; Secretary of State Hillary Rodham Clinton; Sen. John Kerry, D-Mass.; Sen. Richard Lugar, R-Ind.; Sen. Dianne Feinstein, D-Calif.; Sen. Thad Cochran, R-Miss.; Sen. Jeanne Shaheen, D-N.H.; and Vice President Joe Biden. (Official White House Photo by Chuck Kennedy)