(Due to arrive Melbourne-18.4.25)
My dear P.M.,
NAVAL DEFENCE IN FAR EAST
I write to let you know that a series of most important questions have been handed down from the Cabinet to the Committee of Imperial Defence for investigation.  In general terms, they hinge on the broad question of our Naval Defences in the Far East.
The C.I.D. will probably take at least a month or two to get anywhere on it. It is being kept very secret, but I will get the general story of it from Hankey from time to time.
The current rumour that is going about is that there is an attempt on foot to discredit Austen Chamberlain as Foreign Minister, originating with the 'Isolationist' section of the Cabinet (Winston Churchill , Birkenhead , Amery , Curzon ) and carried on by their friends outside, which include my Lords Beaverbrook  and Rothermere. 
There is no doubt that they 'downed' him over the French- BritishBelgian pact. One can only say that he did not put it up in a 'do-or-die' manner, but allowed himself to be overruled without much ado; also I think that in this case they had the arguments in their favour.
I am afraid the number of the 'Isolationists' will be less one by the time you get this, as Curzon is very sick, and said today to be dying. 
I am, Yours sincerely, R. G. CASEY