All terms in this list:

Imperialism: The policy of forcefully extending a nation's authority by territorial gain or by the establishment of economic and political dominance over other nations.

Espionage: The act or process of learning secret information through clandestine means.

Clandestine: Done or kept in secret, sometimes to conceal an illicit or improper purpose.

Racism: The belief that one race is superior to all others.

Expansionism: The policy, of a nation, of expanding its territory or its economic influence

Nationalism: Supporting a national identity when it does not exist as a sovereign nation, for example, Basque nationalism, Kurdish nationalism.