EURO menace Jean-Claude Juncker’s dad fought for Hitler in World War Two.

And his father-in-law was a Nazi sympathiser who persecuted Jews in his home

country.

Juncker, 59, is tipped

to be the European Commission’s new president.

But his plans for a bigger EU with less say for the UK have led to opposition

from David Cameron — and The

Sun branding him the most dangerous man in Europe.

Sources say the ex-Luxembourg PM’s demands stem from shame over his dad.

Steel worker Joseph was forced to join the German army and fight in Russia

from 1941. Juncker’s EU colleague Henri Grethen said: “The experience of his

father had a big impact. He doesn’t want the story repeated.”

Father-in-law Louis Mathias Frising — dad to Juncker’s wife of 35 years

Christiane — was a teacher in Ettelbruck, Luxembourg, when the Germans

invaded in 1940.

Frising volunteered to be a Nazi propaganda chief while banning spoken French

in favour of German.

He was also responsible for enforcing a law which stripped Jews of their

rights and professions — the first stage of the Holocaust.

After the war Frising had his teaching licence revoked and set up a DIY shop.

He had two daughters before dying aged 89 in 2004.

A neighbour said: “I knew Louis for 30 years and had no idea he was a Nazi

sympathiser. He kept that quiet because presumably it would have been

politically damaging to Jean-Claude.”

The Junckers live in a £2million mansion near Luxembourg City. His campaign

manager declined to comment.

daniel.sanderson@the-sun.co.uk