NATO Secretary General Anders Fogh Rasmussen (2nd L), and Turkish National Defense Minister Vecdi Gonul (3rd L) walk to the venue for the informal meeting of NATO defense ministers in Istanbul, Turkey, Feb. 4, 2010. NATO defence ministers started a two-day session in Istanbul on Thursday dedicated to reviewing operations in Afghanistan and finding ways to solve a one-billion-dollar shortfall for 2010. [Chen Ming/Xinhua]