
WASHINGTON, DC - JULY 29: Senate Foreign Relations Committee members (L-R) Sen. Ron Johnson (R-WI), Sen. Jeff Flake (R-AZ) and Sen. John McCain (R-AZ) hear testimony from State and Treasury departments officials during a hearing about the ongoing P-5+1 talks with Iran in the Dirksen Senate Office Building on Capitol Hill July 29, 2014 in Washington, DC. Many members of the committee are skeptical that the Obama Administration's agreement to extended talks with Iran for an additional four months will apply enough pressure to force an agreement. Chip Somodevilla/Getty Images