The policy of appeasement – strategic concessions to an aggressor that are designed to avoid war – is generally most closely associated in the UK with the Conservative leader Neville Chamberlain, prime minister between May 1937 and May 1940.

When Chamberlain moved into 10 Downing Street, Adolf Hitler’s willingness to ignore international agreements was already apparent, having broken the Versailles treaty with a massive expansion of Germany’s armed forces, the occupation of the Rhineland.

Faced with the prospect of Germany moving on Czechoslovakia, Chamberlain continued to work to appease Hitler by agreeing to territorial concessions in his favour. He believed that by appeasing the Führer, Europe could avoid war and save lives.

Chamberlain’s failure, and the subsequent outbreak of the second world war after Germany’s invasion of Poland in September 1939, are recognised as evidence that the appeasement of expansionist nationalists always fails. Such leaders will simply take all that is offered and demand more.

Get your news from actual experts, straight to your inbox. Sign up to our daily newsletter to receive all The Conversation UK’s latest coverage of news and research, from politics and business to the arts and sciences.

There are parallels with the relationship between the current US president, Donald Trump, and the Russian president, Vladimir Putin. Trump and his senior officials have also repeatedly suggested that Ukraine should secure a peace deal by acquiescing to Putin’s demands, including for sovereign Ukrainian territory and assurances that Ukraine won’t be allowed to join Nato.

This makes it seem as if Trump believes that peace can be achieved by appeasing Putin. Like Chamberlain at Munich, Trump has suggested offering the sovereign territory of an independent nation to appease a bully.

Trump is not the first American president to make this mistake. Franklin D. Roosevelt, who served........

© The Conversation