509 Mr R. G. Menzies, Prime Minister, to Lord Cranborne, U.K. Secretary of State for Dominion Affairs
Cablegram 382 19 June 1941,
Your cable No. 422  regarding movement of United States warships into the Pacific. Hope that view previously expressed by us  relating to the minimum force which United States should be asked to retain in the Pacific will not be overlooked.
In the absence of a firm joint statement to Japan in which the United States fully participates any reduction of United States Pacific Fleet below the point dictated by Naval prudence remove[s] most powerful deterrent to Japanese action and might even encourage it.
I would appreciate advice as to how the discussions with the United States regarding joint declaration are proceeding. As I came through Washington I found both President  and Cordell Hull  receptive on this matter, but with a slight reservation about going the full distance.
I hope that urgent and real emphasis is being given to this question.