The American political left/right scale is very silly on the international level. Republicans attack standard Party-Line Democrats as Socialists when in reality

The American political left/right scale is very silly on the international level. Republicans attack standard Party-Line Democrats as Socialists when in reality the vast majority of Democrats would be considered right wing in the EU and the Republican Party are more like Far Right extremists a la AfD, UKIP, etc.. Sanders himself would hardly be center-left in most EU parliaments.