WordNet records no synonym and no antonym for yalta conference. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a conference held in Yalta in February 1945 where Roosevelt, Stalin, and Churchill planned the final stages of World War II and agreed to the territorial division of Europe
Synonyms, antonyms and the broader and narrower relations for yalta conference come from Princeton University’s WordNet. Full sources and licences.