In a recent speech in Berlin, U.S. President Barack Obama reaffirmed his commitment to nuclear disarmament and proposed steps toward achieving that goal. But Russia has made clear that it does not plan to pursue further reductions to its nuclear arsenal any time soon.

In the speech — delivered nearly 50 years after President John F. Kennedy addressed the then-divided city, highlighting the value of arms control between adversaries — Obama announced that the United States is prepared to cut its nuclear arsenal by up to one-third. He also proposed major reductions in the number of tactical nuclear weapons (TNWs) deployed in Europe.

Moreover, he called upon the international community to renew its efforts to prevent Iran and North Korea from developing nuclear weapons; to bring the Comprehensive Nuclear-Test-Ban Treaty and the proposed Fissile Material Cut-Off Treaty into force; and to make nuclear energy safer.