What if the Greeks joins the Entente in WW1 in 1915, right before the Gallipoli Campaign? With this we have to assume that the King and the Prime Minister both agrees to join (could be done by the Entente offering Cyprus, parts of Asia Minor, Eastern Thrace, Northern Epirus, Northern Macedonia and parts of Bulgaria maybe), but the challenge is to get Greece to join in 1915 and to participate in the Gallipoli Campaign, what would the effect be? Could Gallipoli be a success? Russia stays in the war longer? Earlier collapse of the Ottoman Empire? Earlier end to the war?