Polish President Andrzej Duda, left, and Jaroslaw Kaczynski, leader of Poland's ruling party Law and Justice and twin brother of Lech Kaczynski, stand in front of the monument of the late Polish President Lech Kaczynski, who died in a 2010 plane crash, in Warsaw, Poland, Saturday, Nov. 10, 2018. The official unveiling ceremony is taking part a day before the centennial observances marking 100 years of Polish independence. (AP Photo/Alik Keplicz)