Globalisation and Nationalism are two central phenomena of the modern world.It is important to analyse the relationship between nationalism and globalisation because of the varying opinions held in regards to what impact globalisation has had on the world, how did it influence nationalism so far and how Patriotism is getting re-defined in an age of globalisation and resurgence of nationalism.When globalisation began to accelerate in the 1990s, globalists rejoiced and predicted that globalism would eventually weaken nationalism and international organisations, particularly the UN, would become more powerful. However, such optimism has turned out to be a wishful thought .All the most powerful forces in business, technology and finance pushed for deeper international integration. New supranational organisations such as the World Trade Organisation, the G20 and the International Criminal Court were set up to handle the cross-border issues that proliferated in a globalised world. Meanwhile the European Union, an organisation in which countries pool sovereignty and forswear nationalism, set itself up as the political model for the 21st century.Globalisation's effects on national identity are widely disputed. While some regard globalisation as undermining national identity and increasing cosmopolitanism. Others argue that it works in the opposite direction, possibly even reinforcing national feelings in the form of a backlash.The third argument says that globalisation has increased the sense of nationalism in such a way that national extremism has emerged, anyways extreme right wing nationalism is a political phenomenon rather than a mass movement, which was implemented by cultural authoritarianism. However, globalisation and nationalism promoted each other indeed, as a result of back lash or otherwise. Therefore, both globalisation and nationalism can co-exist in harmony and benefit from each other, then the patriotism which is defined 'as love and admiration for one's own country for what it does and willingness to die to defend it, if required ' will often be in conflict with nationalism, which advocates 'love for country, no matter what it does'.A patriot may take a stand against certain forms of globalisation as well as extreme nationalism based on the issues pertaining to it and criticise. Globalists may ignore or rubbishes it and nationalist would consider it as disloyalty at the best and treason at worst, unfortunately even in democratic countries, bringing the freedom of speech and intolerance to difference of opinion into the debate.This book analyses the theories of leading international scholars and examine the impact of globalisation, effects of nationalism and ethics of patriotism, all sort of extremism and disparity in an age of globalisation and resurgence of nationalism.