"when i think of those four terrible years and i think of the 7 million young men who were killed, the 13 million who were maimed and i have said before, and what i say now to all the world-in war, whichever side may call itself the victor, there are no winners, but all are losers. it is those thoughts which have made me feel that it was my prime duty to strain every nerve to avoid a repetition of the great war in europe." -neville chamberlain

question: what was neville chamberlain's justification for his policy of appeasement?