Generate text that refutes this claim: The right of self-defence must be exercised in accordance with international law.  There can be no right to such terribly destructive weapons; their invention is one of the great tragedies of history, giving humanity the power to destroy itself. Even during the Cold War, most people viewed nuclear weapons at best as a necessary defence during that great ideological struggle, and at worst the scourge that would end all life on Earth. Nuclear war has never taken place, though it very nearly has on several occasions, such as during the Cuban Missile Crisis. And in 1983 a NATO war game, the Able Archer exercise simulating the full release of NATO nuclear forces, was interpreted by the Soviet Union as a prelude to a massive nuclear first-strike. Oleg Gordievsky, the KGB colonel who defected to the West, has stated that during Able Archer, without realising it, the world came ‘frighteningly close’ to the edge of the nuclear abyss, ‘certainly closer than at any time since the Cuban missile crisis of 1962’. [1] Soviet forces were put on immediate alert and an escalation was only avoided when NATO staff realised what was happening and scaled down the exercise. [2] Cooler heads might not prevail in future conflicts between nuclear powers; when there are more nuclear-armed states, the risk of someone doing something foolish increases. After all, it would take only one such incident to result in the loss of millions of lives. [3] Furthermore, in recent years positive steps have finally begun between the two states with the largest nuclear arsenals, the United States and Russia, in the strategic reduction of nuclear stockpiles. These countries, until recently the greatest perpetrators of nuclear proliferation, have now made commitments toward gradual reduction of weapon numbers until a tiny fraction of the warheads currently active will be usable. [4] All countries, both with and without nuclear weapons, should adopt this lesson. They should contribute toward non-proliferation, thus making the world safer from the threat of nuclear conflict and destruction. Clearly, the focus should be on the reduction of nuclear weapons, not their increase.  [1] Andrew, Christopher and Gordievsky, Oleg. 1991. “KGB: The Inside story of its Foreign Operations from Lenin to Gorbachev”. New York: Harper Collins Publishers.  [2] Rogers, Paul. 2007. “From Evil Empire to Axis of Evil”. Oxford Research Group.  [3] Jervis, Robert. 1989. The Meaning of the Nuclear Revolution: Statecraft and the Prospect of Armageddon, Cornell Studies in Security Affairs. Ithaca: Cornell University Press.  [4] Baker, Peter. 2010. “Twists and Turns on Way to Arms Pact With Russia”. The New York Times.
defence house believes all nations have right nuclear weapons
All parties recognize the risk of their total destruction as a result of starting a nuclear conflict. This is exactly why no full scale war has broken out between nuclear powers. Supposing that states will be unable to handle the responsibility of nuclear weapons does not change the fact that many states have them, and also that many other states are incapable of defending themselves from aggressive neighbours without a nuclear deterrent.