Summits have gone downhill since the Tehran Summit of 1943 committed the Allies to two military fronts in the Second World War, paving the way for eventual victory over Nazi Germany.
Its successor, the Yalta Conference of 1945, kicked off the Cold War and the takeover of half of Europe by the totalitarian Stalinist regime of the Soviet Union. Grown men put away their philosophical differences and Joseph Stalin walked away with, well, everything. Winston Churchill, the great warrior of democracy, together with Franklin Roosevelt, traded off peace for communism and what would be decades of misery for half of Europe.