Spain
Yes. For better or worse, he was trying to improve his own country.
Japan.
Kuwait .
with drugs
The obvious answer is: During Russia's cold war they were trying to get the cold virus under control. Allowing the United States to enter the country would have prevented Russia ROM containing colds. Very similar to the swine flu and Mexico. Right now noone want to ge to Mexico until the swine flu gets controlled.
They were trying to turn Mexico against America.
No. If you are trying to say "we are from Mexico" you should say "nosotros somos de Mexico".
Unless one wishes to consider being a "non" communist, free republic country, such as The Republic of South Vietnam (1955-1975) was; Nationalism. Nationalism had no influence on the war. The war was a simple case of one country trying to take over another one. And the aggressive country happened to be a communist nation.
The Zimmerman Telegram.
Lobbying
Propaganda posters are used to influence people. Typically, they are used for either marketing or political reasons, such as trying to get someone to vote a certain way during an election.