Summit success is a term used to describe the successful outcome of a summit meeting, which is a formal gathering of world leaders or representatives from different countries. The two crossword solutions that relate to this term are PACT and ENTENTECORDIALE. PACT is an acronym for 'PACT of Paris' which was a treaty signed in 1928 that sought to end war and promote peace between nations. Ententecordiale is a French term meaning 'friendly understanding' and was used to describe the relationship between France and Germany in the early 20th century. Together, these two solutions represent the idea of successful summit meetings and the positive outcomes they can bring.