Donald Trump has sold out Ukraine. He makes Chamberlain look like a man of iron principle | Simon Tisdall

Europe’s leaders can no longer trust a word that comes out of Washington. No more slaps on the wrist – we need concrete steps to punish TrumpHistorical comparisons are always inexact. No one conflict precisely mirrors another. Yet Donald Trump’s shameless appeasement of Vladimir Putin carries more than a noxious whiff of Neville Chamberlain’s failed attempt in Munich in 1938 to head off war with Nazi Germany. To be fair to the former UK prime minister – and history largely hasn’t been – his peacemaking efforts had the enthusiastic backing of most people in Britain and France who, like him, were desperate to avoid a repeat of the horrors of the first world war. Trump enjoys no equivalent public support for his treachery. Nor does he face the prospect of a US war with Russia. His betrayal of Ukraine is cynically self-interested, globally dangerous and utterly contemptible.US-Russian talks on agreeing...