New START
As secretary of state, Clinton oversaw the completion of the New START nuclear arms control treaty between the United States and Russia, and successfully pushed for its ratification. In April 2016, the Clinton campaign ran an advertisement claiming credit for Clinton in "securing a massive reduction in nuclear weapons" through the treaty. FactCheck.org found that this ad overstated Clinton's nuclear achievement, noting that New START limits the number of deployed strategic nuclear warheads but does not require either side to destroy nuclear weapons or reduce their nuclear stockpile, that Russia was below the limit when the treaty took effect, and that the country has increased them since then.