Asked what Trump could do to make sure German customers bought more American cars, Gabriel said: “Build better cars."

“There is a link between America’s flawed interventionist policy, especially the Iraq war, and the refugee crisis, that’s why my advice would be that we shouldn’t tell each other what we have done right or wrong, but that we look into establishing peace in that region and do everything to make sure people can find a home there again,” Gabriel said.

“In that area Germany and Europe are already making enormous achievements – and that’s why I also thought it wasn’t right to talk about defence spending, where Mr Trump says we are spending too little to finance Nato. We are making gigantic financial contributions to refugee shelters in the region, and these are also the results of US interventionist policy.”