In response to Mr Trump's tariffs on European steel and aluminium, the EU has imposed tariffs on imports of United States cranberries, orange juice, sweetcorn, peanut butter, bourbon whiskey, cigarettes, cigars, cheroots (a type of thin cigar), cosmetics, motorbikes, boats, jeans, leather footwear, swimwear, underwear and steel products. China, India and Turkey have already hit back with their own tariffs on USA imports.
And the highest-stakes fight still looms: In two weeks, the United States is to start taxing $34 billion in Chinese goods.
The EU has also filed a case contesting the legality of the USA tariffs with the World Trade Organization.
European Union trade officials have described the United States tariffs on steel and aluminum - justified by the Trump administration on grounds of national security -- as "illegal".
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European Commission President Jean-Claude Juncker said on Thursday the US's new stance on trade "goes against all logic and history".
"I think he's going about it in a way where he says 'Look I want to grow the economy".
The 28-nation EU's trade chief, Cecilia Malmstrom, said Wednesday that the bloc would introduce the tariffs on about 2.8 billion euros' ($3.4 billion) worth of US products.
Those personally in the line of fire are among the most concerned.
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Cisse however agrees that after five defeats in the six games featuring African teams, the hunt for glory could take some time . If World Cups were won because of the behaviour of a country's fanbase, then Japan and Senegal would make the 2018 final.
In March, President Trump pledged to impose 25 percent tariffs on steel imports and 10 percent tariffs on aluminum imports from Canada, Mexico and the European Union. "Excluding agricultural products (generally more highly protected), the US tariffs are similar to those from Canada and the European Union, and higher than in Japan".
The trade war risks significantly raising prices for consumers.
Canada has announced it will impose retaliatory tariffs on C$16.6 billion (RM50 billion) worth of U.S. exports from July 1.
Mr Trump ran for the presidency on a vow to topple seven decades of American policy that had favoured ever-freer trade among nations.
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Both countries have spare production capacity and raising output even at lower prices would yield significant returns. The risk is that Saudi Arabia will choose to go it alone, boosting output.
President Trump said the measures against the EU are meant to protect USA national security interests, but the Europeans claim it can not be that close allies, many of them North Atlantic Treaty Organisation partners, would endanger US security. He charged that a succession of poorly negotiated accords - including the North American Free Trade Agreement and the pact that admitted China into the World Trade Organization - put American manufacturers at an unfair disadvantage and destroyed millions of United States factory jobs.