The Congress of Vienna in 1855,the Hague Conference of 1907, the Paris Peace Conference of 1920, the of conference style of diplomacy. However,side-by-side in the post-World war 2 period there also has the growth of the fourth type of diplomacy. The growth of international communication and telephone link has led to the development of personal diplomacy. Nowadays,the head of states or leaders make direct negotiations,meet and discuss problem rather than going through diplomatic agents