内容摘要：But questions still remain over how and why the event was organised.

But questions still remain over how and why the event was organised.

Authorities in the German city of Cologne have defused three unexploded World War Two bombs after the evacuation of more than 20,000 people.Bomb squad technicians deactivated the American bombs on Wednesday after evacuating an area of around 10,000 sq m (107,639 sq ft) following their discovery in a shipyard in Deutz on Monday.

Homes, shops, hotels and schools were told to evacuate, as well as a large hospital and a major train station in what the city called "the largest operation since WW2".Cologne was subjected to particularly heavy bombing during WW2 and unexploded ordnance can still pose a danger.Germany's bomb disposal service was only able to begin the operation after all residents in the densely populated area were evacuated.

"If you refuse, we will escort you from your home - if necessary by force - along with the police," the authorities said.Residents were told if they refused to leave their homes after the evacuation began they could face expensive fines.

Some intensive care patients were helped out in ambulances from the Eduardus Hospital.

Finding bombs from WW2 is not unusual in German cities such as Cologne and Berlin, but these bombs were particularly large.But what will be the impact if in July Trump does decide to increase the tariff on all European Union exports to 20%, as he has threatened to do? "We will go back to the 2019 situation where the market was almost stopped," says Mr Labet.

For French wines in general, things could be even worse."When President Trump raised import duties by 25% for one-and-a-half years of his first mandate, we lost about $600m [£450m] very quickly," says Jerome Bauer, president of the French National Wines and Spirits Confederation.

"But back then Champagne wasn't included, and neither were wines stronger than 14 degrees of alcohol. So you can see the scale of the threat today."The solution Mr Bauer is backing is free trade. No tariffs. But you'd expect him to say that, given that France and Europe run a big trade surplus with the US when it comes to wines and spirits.