President Donald Trump on Friday threatened a 100% tax on imports from any country that imposes a tax on digital services from United States companies.
Russia's Foreign Ministry again warned that Moscow will not accept the presence of any Western troops in Ukraine as part of a future peace deal.
On Saturday, multiple postal services around Europe announced that they are suspending the shipment of many packages to the United States amid a lack of clarity over new import duties.
Russian President Vladimir Putin's continued refusal to accept a ceasefire is "complicating" efforts to reach a peace deal, Ukrainian President Volodymyr Zelenskyy said.
British Prime Minister Keir Starmer is meeting Monday with Trump at a golf property owned by the president's family near Turnberry in southwestern Scotland.
The 134th annual Polish Constitution Day Parade rolled down Columbus Drive in Chicago on Saturday, and with more than 1.5 million Polish-Americans living in the Chicago area, huge crowds came out to celebrate.