From the Summary: "Heads of state and government from the 30 member states of the North Atlantic Treaty Organization (NATO) are due to meet in Brussels, Belgium, on June 14, 2021, to discuss security challenges and consider proposals to bolster political cohesion within the alliance. When allied leaders last met in London, United Kingdom, in December 2019, deliberations exposed heightened political tension and divergent views on a number of issues. Former President Trump's criticisms of NATO and individual European allies and his Administration's perceived lack of consultation with allies on key foreign policy issues were points of contention. [...] In response to recent transatlantic tensions and questions about NATO's longer-term relevance, NATO Secretary General Jens Stoltenberg launched the NATO 2030 Initiative to advance proposals to strengthen the alliance, both militarily and politically. At the June 14 summit, the allies are expected to consider Stoltenberg's recommendations to reinforce alliance unity, broaden NATO's approach to security, and defend the rules-based international order. Recommendations could include updating NATO's strategic concept, last updated in 2010, to better reflect today's security environment, especially with respect to Russia and China; enhancing NATO's capacity to counter nonmilitary threats; and strengthening NATO's commitment to democratic values and enhancing its relationships with like-minded partners across the globe."
CRS Report for Congress, R46066
Congressional Research Service: https://crsreports.congress.gov/