Estonia is pushing for increased defense spending and closing capability gaps at the NATO summit in Washington. Canada faces criticism for falling behind in military spending within NATO as Prime Minister Trudeau seeks to reaffirm commitments. Following Russia's attack on a children's hospital in Kyiv, UK's Sir Keir Starmer faces pressure to raise military spending to 2.5% of GDP. NATO leaders must reassert the alliance's relevance at its 75th anniversary, emphasizing the importance of defense spending and American leadership. Pro-American Eastern Europeans stress the need to keep NATO strong against potential unraveling threats.