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CIA World Factbook

Amnesty International

United Nations Economic & Social Council

Also the main site has a list of issues & campaigns with links:

ISSUES / CAMPAIGNS

• Democracy <<correct link>>
• Decolonization
• Rule of Law
• Prevention of Genocide and the Responsibility to Protect
• The Holocaust
• The Question of Palestine
• The Rwanda Genocide
• Action to Counter Terrorism
• Victims of Terrorism
• Children and Armed Conflict
• UNiTE to End Violence Against Women
• Messengers of Peace
• Millennium Development Goals
• Sustainable Development
• Climate Change
• Zero Hunger Challenge
• Global Issues
• Observances
• UN and Sustainability
• World Humanitarian Summit
• Refugees and Migrants

BBC News Country Profiles

Country profiles also looks at the current leader(s), a brief timeline of important dates, a link at the bottom "Related Topics - [Country name]" that takes the user to other recent newsworthy events regarding that country. 
Example Afghanistan profile

United Nations Association provides a whole page of Country Information Links. 

The U.S. Bilateral Relations Fact Sheets

InfoPlease

Model United Nations Manifesto <<insert document link>>

The New York Times
News by Country pages:
Go to each region, then scroll about halfway down on the right to "Times Topics: Find News by Country"