Internationalism
Internationalism is an ideology which stresses the benefits of greater cooperation between nations. It advocates that humans should unite across national boundaries to advance a common cause or interest. Being a broad term, it is similar to 
Globalism and 
Cosmopolitanism, but is generally distinct in the way that internationalism is less extreme than the two (e.g. doesn't necessarily want a one-world government or to mix cultures, etc).
Internationalism can be advocated for many different reasons. Economic internationalism supports states cooperating with each other to improve economic relations with each other; an example of this is the 
European Union. Another form of internationalism includes diplomatic/foreign interventionism, popular with ideologies such as 
Neoconservatism. Historically, 
socialist movements have used internationalism to unite communists world-wide against class struggle.
History
Beliefs
Internationalism believes in working across national borders to spread the ideas of a particular movement or ideology.
Variants
Far-Right Internationalism
Liberal Internationalism
See:
Liberalism
Libertarian Internationalism
Proletarian Internationalism
Proletarian Internationalism believes in uniting the working class across national borders to bring about 
communism. This idea is based on the theory that 
capitalism is a global system.
Relationships
Friends
Leninism - A communist who is a massive fan of me.
Marxism - Workers of the world unite!
Neoconservatism - Exporting freedom to other countries? Based!
Neo-Libertarianism - Essentially the one above but more extreme .
Neoliberalism - You love me a lot. But you can be a bit extreme at times.
Cosmopolitanism - We are world citizens.
Globalism - Me, but more focused on maintaining a one-world government.
Civic Nationalism - My favorite form of nationalism!
Alter-Globalism - Protecting worker's rights and promoting internationalism? Based!
Frenemies
Nationalism - As long you help other countries, you're OK.
Patriotism - Like the above but softer and better.
Ethnopluralism - We both support universal theories, but why are you racist?
Welfarism - Depends if I support deregulation or not.- Libertarianism &
Anarcho-Capitalism - I love your universalist ideas but you simp too much for decentralization and local rule, be more like 
them and less like these 
others.
Enemies
Paleoconservatism - Isolationist and a closeted fascist.
Ultranationalism - Fascist!
Neo-Nationalism - Zoomer-Boomer Biggot sickness!
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