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Bernie Sanders is only extreme by United States standards. But even there, he is gaining in popularity, Professor Robert Patman says.

Senator Bernie Sanders. Photo: Reuters

Sanders, the frontrunner for the Democrat presidential nomination, is labelled a ‘‘socialist’’ and ‘‘extremist’’ by his opponents.

But by United Kingdom and German political standards, his plans are merely mainstream, Prof Patman, an international relations specialist, says.

And now Sanders appears to be shaking off those labels, extending his support beyond the youth vote as he proves willing to take a stronger stand than US President Donald Trump against Russian President Vladimir Putin.