Provides basic statistics and a summary of each country. Most relevant to environmental policy see sections on geography, energy, transnational issues, people & society. The international agreements signed by a country are included in the "environment" section.
Includes World Development Indicators by Country and other environmental and financial statistics. Can get a country report by SDG or other UN themes (agriculture, disaster risk, etc.)
IPCC awarded Nobel Peace Prize for this climate research. See the regional chapters at the end, the separate Global to regional atlas annex (appendix) or the regional Fact Sheets for any of the "Impacts, Adaptation, & Vulnerability" reports. Or, try out the new Interactive Regional Atlas starting with the 6th assessment.
Try this search engine for reports from various IGOs on countries and treaties. Compiled by the British Library for Development Studies this search engine includes over 400 intergovernmental organizations including the UN, NATO, and EU.