US president Donald Trump has said he will put tariffs on 11 billion dollars (£8.4 billion) worth of European Union cheese, wine and other goods.
The move is said to be in retaliation for the “adverse effects” on the US of subsidies for EU manufacturer Airbus.
The office of the US trade representative released a preliminary list of EU goods facing additional duties that includes aircraft parts, cheese, wine and olives.
The list is subject to public comment in anticipation of an expected World Trade Organisation (WTO) ruling this summer that would be favourable to the US in a pending arbitration case.
The US says the WTO has repeatedly found that EU subsidies to European aircraft maker Airbus have caused "adverse effects" to the US, chiefly to Boeing, the American plane manufacturer.
Mr Trump, a critic of the WTO, tweeted that he "will now put tariffs on $11 Billion of EU products! The EU has taken advantage of the U.S. on trade for many years. It will soon stop!"
The long-running dispute precedes the Trump administration.
The US had in 2004 complained to the WTO, which sets global trade rules and settles disputes, that the EU was providing unfair support to Airbus.
The WTO ruled last May that the EU had in fact provided some illegal subsidies to Airbus, hurting Chicago-based Boeing.
The EU has argued that Boeing has benefited from similar government support.
The US expects the WTO will say this summer that it can take countermeasures to offset the EU subsidies.