Molotov cocktails and projectiles targeted the police on Monday in Derry, the city of Bloody Sunday. Joe Biden is celebrating 25 years since the Good Friday Agreement ended three decades of conflict.
MI5 says an attack is highly likely during these celebrations, which would be a good opportunity for some dissident groups to make themselves heard. The leader of the political party Sinn Fein, Michelle O'Neill regrets a "discreet" passage in the British province. The President will not even go to Stormont, the seat of the Assembly.