Solution:The idealist school of thought in international relations proposed to replace ‘balance of power’ by disarmament. The idealist approach holds that old, ineffective and harmful modes of behaviour i.e., war use of force and violence should be abandoned in favour of new ways and means as determined by knowledge, reason, compassion and self-restraint. Some idealist thinker– Woodrow Wilson, Bertrand Russell, Mahatma Gandhi, Aldous Huxley, William Ladd, Richard Cobben, Margret Mead, Sir Alfred, John Maynard Keynes, Zimmern, Norman Angell.