Written as it happened, and updated as it developed.
Canada has published a detailed list of new tariffs on $20 billion of American goods, including steel, dairy, fish, furniture and cosmetics, matching tariffs the United States already placed on Canadian goods.
CIA Director John Ratcliffe traveled to Moscow on Tuesday, according to two US media outlets, in what would be his first known visit to Russia since becoming America's top spy chief.
China said it will keep trading with Iran and will not bow to what it called economic warfare, after the United States sanctioned Chinese companies over their Iran business last week and told other countries to halt trade with Tehran too.
The United States has tightened sanctions on Iran, and global stock markets mostly rose in response while oil prices fell and European defence company shares jumped.
The United States is asking the UN Security Council to impose tougher sanctions on the two armed groups fighting in Sudan's civil war, hoping to pressure them into peace negotiations.
The United States removed Syria from its list of state sponsors of terrorism, a designation dating back to 1979 that had kept most foreign banks and investors away from the country.
The US Treasury Department punished Chinese companies for doing business with Iran and told other countries to cut Iran trade too or face the same sanctions.
Taiwanese prosecutors have charged nine people, including someone who works for the chipmaker Nvidia, with illegally sending AI servers (powerful computers built for artificial intelligence) using Nvidia chips to China.
US President Donald Trump says he will double tariffs, taxes on imported goods, on Canadian-made cars and parts to 50%, and add new tariffs on Canada starting January 2027, after trade talks in Washington collapsed and Canadian negotiators walked out.
The U.S. Treasury Department is preparing to expand penalties on countries and companies that do business with Iran, according to a source cited by Reuters. Washington has also asked China to join the effort, according to WFAA. These so-called secondary sanctions can punish non-U.S. firms, including Chinese companies, for trading with Iran. It is not yet clear which sectors would be targeted or whether China, a major buyer of Iranian oil, will agree to take part.
Days after the US announced new sanctions on Iran, its currency, the rial, has dropped to its lowest value on record.
Canadian Prime Minister Mark Carney said Canada is now 'at war' with the United States over trade, after talks between the two countries broke down.