Proposed by US President Monroe, the Monroe Doctrine stated that:
- The States in the American Continent will not be subjected to colonization in future.
- America would not interfere in the mutual wars of European States
- If European countries interfered with the affairs of the countries of the American continent, USA will take an appropriate action to protect the independence of the countries in the American continent
This doctrine lost its importance after the United Nations Charter came into effect.
- Oppenheim says that the doctrine is political and not legal
- While it is not admitted to be legal, no European country opposed it
- Article 21 of Covenants gives the doctrine a quasi-legal status
- Indian Government acted in similar implementation of this doctrine to warn Portuguese not to interfere with the affairs of Goa after it was annexed to India.