He influenced me at least and I'm sure a lot of other people in believing the stereotype of Poles -- when I moved here I found it wasn't true.
I liked him as well. He tells the story of the founding of Israel with great drama. I don’t think most people walk away from his books thinking of Poland as an evil country. Uris shames a lot of countries in not helping the Jews.
As I recall, there is a Polish character named Wanda who helps Dov in delivering underground messages.