After the war, Tito continued to pursue dominance in the region. In 1946, Albania and Yugoslavia signed a treaty on mutual assistance and customs agreements, almost completely integrating Albania into the Yugoslav economic system. Nearly a thousand Yugoslav economic development experts were sent to Albania, and KPJ representative was added to the PKSH central committee. The two countries' militaries also cooperated, at least in the mining of the Corfu Channel in October 1946—an action which damaged two Royal Navy destroyers and resulted in 44 dead and 42 injured. Even though the USSR had indicated previously it would only deal with Albania through Yugoslavia, Stalin cautioned the Yugoslavs to slow down unification with Albania.