Trump changes his mind, incidental at Trzaskowski's rally, PiS march

Donald Trump has excluded any products from the latest tariffs. A gathering of delegations from the United States and Iranian authorities took place in the capital of Oman, Muscat, on Saturday. A march organized by PiS took place in Warsaw. Prime Minister Donald Tusk reported that there had been an "attempted gas attack on Rafał Trzaskowski." Here are 5 things to know on Sunday, April 13.