Western attempts to reunite the Partisans, who denied the supremacy of the old government of the Kingdom of Yugoslavia, and the émigrés loyal to the king led to the Tito-Šubašić Agreement in June 1944; however, Marshal Josip Broz Tito was in control and was determined to lead an independent communist state, starting as a prime minister. He had the support of Moscow and London and led by far the strongest partisan force with 800,000 men.[16][17]