The US has filed a complaint against Russia at the World Trade Organisation (WTO), challenging the retaliatory duties that Moscow has placed on US imports as trade tensions rise.
It is the latest US move in the tit-for-tat trade war that began in March with US tariffs on aluminium and steel.
The US has said the protections are allowed under national security grounds and argued that the retaliatory measures violate trade rules because they are too high and apply only to US imports.
The US has filed similar complaints against the EU, Canada, China, Mexico and Turkey, which are among the countries that have retaliated against the US metals tariffs.
Those countries are among those that have also brought their own complaints against the US over the import duties.