The Graphic Truth: Nuclear weapons — who has what?
As the world prepares to mark 75 years since American forces dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki, global non-proliferation efforts, first codified in Cold War-era treaties, are in jeopardy. While the overall number of nuclear weapons continues to decrease — mainly because the US and Russia have set about dismantling retired weapons — both countries, which account for 90 percent of the world's total nuclear arsenal, continue to modernize their nuclear weapons programs. Meanwhile, the New START treaty, which limits the number of long-range nuclear weapons that each side can deploy to about 1,500 apiece, is at risk of collapsing. Here's a look at which countries have nuclear weapon stockpiles and who's ready to use them.