The Treaty of Westphalia that ended the bloody thirty years war in 1648 is widely regarded as the watershed moment in the creation of modern state system. This system is based on the principles of sovereignty of states, non-interference in their domestic affairs and sanctity of the territorial integrity. In order to protect this system, the first multilateral global body League of Nations was established in 1919 after the conclusion of the First World War, a war that created many nation states in violation of the assumption of the treaty of Westphalia. 
The World War 2 was even bloodier. League of Nations was abolished and a new more powerful body United Nations came into being to maintain international peace and order. More nation states were established as colonial powers withdrew from their dominions . In this era, with few exceptions the principle of sovereign power of a state and its territorial integrity was respected by the global community. 
The rise of Donald Trump in USA has given rise to the new phenomenon. Trump is challenging the old school by articulating his own vision of national and international politics. His suggestion of making Canada 51st state of USA clearly indicates that in his mind Westphalian or UN framework is no longer relevant. Trump also indicated that Greenland should be a US state. He is assertive about the Latin America too where he wants complete control over Gulf of Mexico and Panama Canal. Trump’s new ideas of geopolitics has emboldened the Isreal to materialise her old dream of greater Isreal thus redrawing the maps in the Middle East. 
The Chinese are vocal about Taiwan, Tibet, and Laddakh being part of China and will go to war to make their dream of one China a reality. This will certainly redraw maps in the pacific region as well as South Asia. Russia has already occupied some territory of Ukraine and they are not likely to retreat from that region. Even if Ukraine war ends, the Ukraine would lose part of her territory. India, another major power is also keen to expand and considers territories of Kashmir, Gilgit Biltistan and Tibet as their own. They are vocal about acquiring these territories even if they had to go to war. 
So in this context, Westphalian system is falling. The emergence of new power centres are demanding for new adjustments both in international system and geographical configuration. In international system, reform of UN Security Council, International Financial Institutions and creation of new institutions like BRICS is the epicentre of the agenda. 
This situation is dangerous for world peace. The destructive power of the new great powers is so catastrophic that humanity cannot survive if an all out war breaks out like twentieth century. Trump, Xi, and Putin have immense power and responsibility to carry. These leaders must collaborate for creating a new global system by taking into consideration the advice of other major powers and large countries even if they don’t qualify as major power at this juncture of history. A minor miscalculation can be very costly. The leaders must tread their paths carefully, wisely and by exercising restraint. Reckless behaviour with such immense power may lead to unpredictable outcomes.