Stefani 's remarks further stoked tension after Italian Prime Minister Silvio Berlusconi last week compared a German member of the European Parliament to a Nazi concentration camp guard .
Stefani 's remarks further stoked tension after Italian Prime Minister Silvio Berlusconi last week compared a German member of the European Parliament to a Nazi concentration camp guard .
Schroeder cancelled his Italian holiday after Stefani refused to apologise for the slurs , which came after Berlusconi compared a German politician to a Nazi concentration camp guard .