The often overlooked yet rapidly expanding petrochemical feedstock trade between the United States and China could become one of the biggest casualties in the two giants' escalating economic clash.

China responded to US tariffs imposed by President Donald Trump with a series of countermeasures, including 34 per cent additional duties on all American goods and export curbs on certain rare earth e

Canada and other countries also readied retaliation after President Trump raised U.S. tariff barriers to their highest level in more than a century.

U.S. President Donald Trump threatened to further increase tariffs on China on Monday, raising the possibility of further escalation in a trade war that has already wiped trillions of dollars from global markets.

The higher rates are set to be collected beginning Wednesday, ushering in a new era of economic uncertainty with no clear end in sight.

President Donald Trump says he's considering additional tariffs on China. The Republican president's threat came Monday after Beijing retaliated against his announcement of tariffs last week.

The rebuke came after Trump said he would impose an additional 50% duty on US imports from the world's No.2 economy on Wednesday

U.S. President Donald Trump said on Monday he will impose an additional 50% tariff on China if Beijing does not withdraw its retaliatory tariffs on the United States. "Additionally, all talks with China concerning their requested meetings with us will be terminated!