Justin Trudeau has warned Donald Trump it is not in either of their countries' interests to engage in a coronavirus trade war after the US banned companies from exporting face masks to Canada amid a shortage.

The US President said on Friday he would ban the export of critical N95 masks and other precious medical gear – as he blasted a manufacturer who criticized the administration for halting its shipment to Canada.

'We need the masks. We don't want any other people getting it,' Mr Trump said.

Speaking the following morning, Trudeau warned Trump that such a ban is 'not in any of our interests' as it could damage trade between the neighbouring countries.

It comes amid a 'wild west' market in which the US has outmuscled other countries by allegedly paying vast sums to redirect protective equipment originally going to help other countries.

It has led one German official to slam America's 'rabid' behaviour over the sought after masks.

Justin Trudeau has warned Donald Trump it is not in either of their countries' interests to engage in a trade war

The US President said on Friday he would ban the export of critical N95 masks and other precious medical gear

Trudeau said at his press conference: 'We're working with the American administration to ensure that they understand the goods and services that are essential to both our countries flow in both directions across the border, and it is not in any of our interests to actually limit that flow.

'It is in both of our interests to maintain this extraordinary close relationship.'

But the Canadian Prime Minister said he would stop short of retaliatory measures against the US.

He said: 'We are not looking at retaliatory measures or measures that are punitive.

'We know it is in both our countries interests to cooperate.'

Trudeau said Canada shipped medical gloves and testing kits to the US and said materials for the N95 masks originated in Canada.

Health workers in Canada rely on the masks, while Canadian nurses also crossed the bridge from Windsor, Ontario, to work in the Detroit medical system every day, he said.

Boxes being unloaded from an Antonov 124 aircraft transporting 10 million face masks ordered by France from China at the Paris-Vatry Airport in Bussy-Lettree, eastern France, 30 March

Manufacturing giant 3M says there are significant humanitarian implications of ceasing N95 mask supplies to health care workers in Canada and Latin America, where 3M is a critical supplier of respirators.

'They can sell to others, but they should be taking care of our country,' Mr Trump said.

'3M has not treated our country well. And if they do, great. And if they don't, they are going to have a hell of a price to pay.'

The company has argued blocking exports will raise 'significant humanitarian implications' abroad and lead other countries to retaliate by withholding much-needed medical supplies from the US.

Other countries are complaining about a 'Wild West' marketplace in which the US has 'intercepted' supplies originally intended to go elsewhere.

Prime Minister Boris Johnson warned G20 countries against acting in their own interests after Germany accused the US of 'modern day piracy'.

Protective face masks destined for Berlin were allegedly intercepted at a Thailand airport and diverted instead to the US, prompting angry German officials to blast Donald Trump for the move.

Mr Johnson alongside Foreign Secretary Dominic Raab have warned against 'damaging protectionism' in the face of the global health crisis, with Mr Raab insisting international 'teamwork' is the way forward.

Prime Minister Boris Johnson has warned G20 countries against acting in their own interests amid the Covid-19 pandemic after Germany accused the US of 'modern day piracy'

Mr Raab said that he, the Prime Minister and Trade Secretary Liz Truss have been calling on other world leaders to keep international trade routes open.

Writing for the Sunday Telegraph, Mr Raab said: 'The Prime Minister, Trade Secretary and I are pressing the G7 and G20 groups of major economies to keep trade routes open – and avoid compounding the harm of Covid-19 with damaging protectionism. Teamwork is essential to beating coronavirus.

'The Prime Minister is determined to unite the country behind the national mission at home, and bring countries together abroad.'

The shipment of 200,000 FFP2 and FFP3 masks were made by the US company 3M which has a factory in China.

They were on their way to healthcare workers in Berlin but the masks never arrived.

Instead, German officials allege the protective equipment was intercepted at Bangkok Airport and instead flown to the US.

Protective face masks destined for Berlin was allegedly intercepted at a Thailand airport and diverted instead to the US. Pictured: boxes of FFP-2 masks being delivered to the German army

The United States has angered Germany and France b allegedly seizing millions of masks which were set to be shipped to the European nations amid the coronavirus crisis. erman officials hit out at America for 'intercepting' 200,000 masks they had ordered from a 3M factory in China. Stock image

'We consider that an act of modern piracy,' Berlin's interior minister Andreas Geisel blasted.

'You don't treat your transatlantic partners like that,' he is further quoted as saying in The Financial Times.

Meanwhile one German federal official told The Wall Street Journal that 'America's behavior since the crisis has been positively rabid when it comes to medical supplies.'

Geisel called on Germany's government to 'press the US to stick to international rules', while Berlin's mayor accused President Trump of 'lacking solidarity' following the seizure of the shipment.

3M has denied the account, stating it has 'no record of any order of respirators from China for the Berlin police'.

A spokesperson for Berlin police has since clarified that the masks were bought at a higher price by a mystery buyer in Thailand - and their whereabouts is unknown.

But sources have told German news outlet Der Tagesspiegel that the masks have arrived in the US.

Berlin officials called on Germany's government to 'press the US to stick to international rules', and accused President Trump of 'lacking solidarity' following seizure of the shipment

The dispute came after the White House condemned 3M for producing face masks for overseas countries instead of focusing solely on the US.

Earlier in the week, US buyers paid three times the going rate to secure a shipment of face masks from China that were due to be dispatched to France, two French officials claim. The US has denied the allegation.

Paying cash to divert the air cargo to the US, the buyers are said to have commandeered the shipment of masks as they sat on a plane at Shanghai airport ready for take off.

The order of several million masks had been due to arrive in part to the Grand Est region in north west France, an area where intensive care facilities are already struggling to cope with the volume of coronavirus patients.

Jean Rottner, a doctor and president of the GrandEst regional council, told RTL radio that the US buyers had turned up on the tarmac offering cash.

He said: 'On the tarmac, they arrive, get the cash out … so we really have to fight.'

The leader of the Ile-de-France region, which includes Paris, also accused unidentified Americans of swooping in with cash at the last minute to secure shipments already promised to French buyers.

Valerie Pecresse, the chief of France's most populous region, said: 'We lost an order to the Americans who outbid us on a shipment that we had lined up.'

Pecresse claimed that while France pays on delivery for such supplies - crucial in the global fight against the pandemic - 'Americans pay cash' without bothering to see the goods.

They 'are just looking to do business on the back of the whole world's distress,' she told LCI television.

A worker next to cargo unloaded from a different plane carrying 10 million face masks ordered by France from China, at the Paris-Vatry Airport in Bussy-Lettree, eastern France, 30 March

France has ordered 1 billion face masks due to be delivered within the next 14 weeks and has deployed an air-bridge flight with China to deliver them amid the ongoing covid-19 pandemic.

Shipping company Geodis is responsible for the organisation of 16 flights by two chartered cargo planes, reports World Cargo News.

A senior US official on Thursday rejected allegations from French politicians that Americans had accroached the French shipment during the coronavirus crisis, calling the stories 'completely false.'

In Washington, a senior administration official told AFP 'the United States government has not purchased any masks intended for delivery from China to France.'

France has ordered 1 billion face masks and has deployed an air-bridge flight with China to deliver them amid the ongoing coronavirus COVID-19 pandemic

'Reports to the contrary are completely false,' said the official, asking not to be named

President Trump is desperately trying to secure masks and other personal protective equipment for Americans as the nation's emergency stockpile depletes.

On Thursday, the Commander-in-chief ordered 3M to manufacture more masks for Americans as the coronavirus infection rate in the US soared above 258,000. More than 6,600 have died.

Meanwhile, Germany has clocked 90,964 cases and 1,234 deaths as of Friday afternoon.