Greek-Yugoslav confederation
... that the British-supported Greek-Yugoslav confederation was signed during World War II, but never came to pass?
... that the British-supported <b id="mwBhs"><a class="mw-redirect" href="./Greek-Yugoslav_confederation" id="mwBhw" rel="mw:WikiLink" title="Greek-Yugoslav confederation">Greek-Yugoslav confederation</a></b> was signed during <a href="./World_War_II" id="mwBh0" rel="mw:WikiLink" title="World War II">World War II</a>, but never came to pass?