CIA World Factbook

Amnesty International

United Nations Economic & Social Council

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

• 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"