The Debt (2007)

In 1965, Rachel Brener is one of 3 young Mossad agents who caught "The Surgeon of Birkenau" - a Nazi monster who was never brought to trial in Israel and is presumed dead, when in reality he has managed to escape after a botched kidnapping. 35 years later, a small article appears in a local paper in a Kyiv, Ukraine, revealing that the the Surgeon is alive. The 3 older Mossad agents have to decide whether to complete the old assignment and eliminate their target or let the truth come out (and their reputation be destroyed).