 U.S. analysts have had access to many important Russian governmental archives for research on past conflicts including the Central Archives of the Ministry of Defense in Podolsk, Russia—the largest military archive in Europe.After a period of decreased cooperation starting in 2006, U.S. President Obama and Russian President Medvedev revitalized the work of the USRJC in July 2009 with an exchange of Diplomatic Notes reaffirming their respective countries' commitment to strengthening bilateral cooperation on POW/MIA issues.Retired Air Force General Robert H. “Doc” Foglesong has served as Chairman of the U.S. Side since April 2006.