December 07, 1946
His Majesty George H King of Hellenes Athens
I wish to extend you my most heartfelt sympathy on the sad occasion of the sudden death of His Excellency Cimon Diamantopoulos. He was both a worthy representative of your valiant people and a greatly loved friend of this country. I feel a sense of personal loss in his passing.
HARRY S. TRUMAN
Harry S Truman, Message of Condolence to King George II Upon the Death of the Greek Ambassador. Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/232322