Neville Chamberlain

 https://en.wikipedia.org/wiki/Neville_Chamberlain

Chamberlain's reputation remains controversial among historians, the initial high regard for him being entirely eroded by books such as Guilty Men, published in July 1940, which blamed Chamberlain and his associates for the Munich accord and for allegedly failing to prepare the country for war. Most historians in the generation following Chamberlain's death held similar views, led by Churchill in The Gathering Storm. Some later historians have taken a more favourable perspective of Chamberlain and his policies, citing government papers released under the thirty-year rule and arguing that going to war with Germany in 1938 would have been disastrous as the UK was unprepared. Nonetheless, Chamberlain is still unfavourably ranked amongst British prime ministers.[1]