Senator Dick Durbin (D-IL)(R) holds a copy of the letter Senate Republicans sent to Iran as he and Senate Minority Leader Harry Reid (D-NV) speak after a vote failed to advance debate on a nuclear agreement with Iran on Capitol Hill in Washington September 10, 2015. A Republican-backed measure to derail the Iran nuclear agreement was blocked in the U.S. Senate on Thursday, in a major foreign policy victory for Democratic President Barack Obama. REUTERS/Joshua Roberts TPX IMAGES OF THE DAY