On 11 April 1939 the Foreign Policy Committee decided that the question of Russia's potential as an ally should be referred to the Chiefs of Staff. Chatfield said that it was clear the political arguments against a Russian alliance outweighed any possible military benefits and that the Chiefs of Staff should only report on Russia's military capability. On 24 April 1939 the Chiefs of Staff submitted their report and rated Russia's military effectiveness low. The next day Chatfield gave the Cabinet Committee on Foreign Policy a summary of this report: "Russia, although a great Power for other purposes, was only a Power of medium rank for military purposes...Her assistance would be of considerable, though not of great, military value". On 16 May 1939 Lord Halifax said that the political reasons for not allying with Russia were stronger than the strategic reasons for such an alliance. Chatfield responded: "...if for fear of making an alliance with Russia we drove that country into the German camp we should have made a mistake of vital and far-reaching importance".