the largest increase in investments for veterans in decades -- last year.  (Applause.)   That's why we're building a 21st century VA.  And that's why Michelle has joined with Jill Biden to forge a national commitment to support military families.  (Applause.) Now, even as we prosecute two wars, we're also confronting perhaps the greatest danger to the American people - -- the threat of nuclear weapons.  I've embraced the vision of John F. Kennedy and Ronald Reagan through a strategy that reverses the spread of these weapons and seeks a world without them.  To reduce our stockpiles and launchers, while ensuring our deterrent, the United States and Russia are completing negotiations on the farthest-reaching arms control treaty in nearly two decades.  (Applause.)  And at April's Nuclear Security Summit, we will bring 44 nations together here in Washington, D.C. behind a clear goal:  securing all vulnerable nuclear materials around the world in four years, so that they never fall into the hands of terrorists.  (Applause.) Now, these diplomatic efforts have also strengthened our hand in dealing with those nations that insist on violating international agreements in pursuit of nuclear weapons.  That's why North Korea now faces increased isolation, and stronger sanctions -- - sanctions that are being vigorously enforced.  That's why the international community is more united, and the Islamic Republic of Iran is more isolated.  And as Iran's leaders continue to ignore their obligations, there should be no doubt:  They, too, will face growing consequences.  That is a promise.  (Applause.) That's