Cabinet mission plan their cabinet mission plan, had it been accepted in good faith by the leaders of india's national congress and muslim league , could have saved millions of lives and averted three disastrous south asian wars, and more than half a century of constant conflict over jammu and kashmir .. The cabinet mission arrived in india on 23 march 1946 and in delhi on 2 april 1946. the announcement of the plan on 16 may 1946 had been preceded by the simla conference in the first week of may. the approval of the plans determined the composition of the new government.. The cabinet mission plan was wrecked on the basic question whether india was to remain united or to be split up to satisfy the muslim league's demand for pakistan.the following points will illustrate the answer..