Europe has "maybe six weeks or so" of remaining jet fuel supplies, the head of the International Energy Agency warned, if oil supplies remain blocked by the Iran war.
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.
Trump has said new tariffs could impact "all countries."
The announcement came in response to tariffs issued by the European Union.