Question

which former British prime minster famously spoke of an " iron mister' descending across europe

Answer 1

The phrase you're referring to was spoken by former British Prime Minister Winston Churchill. In his famous speech in Fulton, Missouri, in March 1946, he described the division of Europe by saying that an "iron curtain" had descended across the continent, symbolizing the ideological and physical division between Western democracies and Eastern communist countries after World War II.