Pakistani military personnel stand beside short-range Surface to Surface Missile NASR during the Pakistan Day military parade in Islamabad on March 23, 2015. Pakistan held its first national day military parade for seven years, a display of pageantry aimed at showing the country has the upper hand in the fight against the Taliban. Mobile phone networks in the capital were disabled to thwart potential bomb attacks, some roads were closed to the public and much of the city was under heavy guard for the event. AFP PHOTO/ Aamir QURESHI (Photo credit should read AAMIR QURESHI/AFP/Getty Images)
Here are the countries ranked by the number of nuclear weapons in their arsenals.
Russia (7000 warheads estimated)
United States of America (6800 warheads estimated)
