Why is The Hague Known as the International City of Peace and Justice?

The Hague began to develop during the 13th century when Count Floris of Holland founded het Binnenhof palace. This gothic complex eventually became the administrative centre of Holland and was converted into the Dutch houses of parliament after the Republic of the Seven United Netherlands was established in 1581.
Even after the Dutch Republic collapsed and was replaced by the Batavian Republic, then the Kingdom of Holland and finally the Kingdom of the Netherlands, Dutch lawmakers continued to mainly convene in the Hague. Although Amsterdam is currently recognised as the capital of the Netherlands the Hague accommodates the country’s parliament, supreme court and council of state. Furthermore, the Dutch Royal family possess two palaces in the city and traditionally live or work in either of these estates.
In 1899 and 1907 a series of international treaties were devised and sanctioned in the Hague that formally outlined the laws of war. These agreements were created in order to establish a binding set of legal protocols that deterred against excessive violence during wartime and re-categorised certain military actions as war crimes.