I have no country to fight for:my country is the earth and i m a citizen of the world.
world citizen has a variety of similar meanings,often referring ta a person who disapproves of traditional geopolitical divisions derived from national citizenship.
an early incarnation of this sentiment can be found in Diogenes of Sinope the founding father of the cynic movement in ancient Greece .of Diogenes(a Greek philosopher).
Albert Einstein described himself as a world citizen and supported the idea throughout his life,famously saying "nationalism is an infantile disease.it is a measles of mankind."world citizenship has been promoted by distinguished people including Garry Davis,who lived for 60 years as a citizen of no nation,only the world.Davis founded the World Service Authority in Washington ,DC,which issues the World Passport to world citizen.