The chief prosecutor of the state National Remembrance Institute Andrzej Pozorski, left, and the head of the institute Jaroslaw Szarek, right, attend a news conference in Warsaw, Poland, Tuesday, Jan. 31, 2017, during which they presented an opinion by experts who say that handwriting analysis confirms beyond doubt that Solidarity founder Lech Walesa collaborated with the communist-era security police from 1970-76, wrote reports on other workers and signed receipts for money. Walesa, a former president and Nobel Peace Prize winner vehemently denies the allegations. (AP Photo/Czarek Sokolowski)