Donald Trump (Credit: AP//Evan Vucci) With tensions stoked by pulling out of the Paris Agreement in June, President Trump’s arrival for the G20 summit in Hamburg, Germany on Thursday was marked with controversy and protest even before he stepped off the plane. The conference, attended by 19 countries and the EU, kicks off Friday, and tens of thousands of police are already patrolling the city. Meanwhile, “most of the shops are closed already and even battened down the hatches,” observed local resident Paola Cermak.