Amos Oz 
Touch the Water, Touch the Wind [EPUB ebook] 

As the Germans advance into Poland in 1939, Elisha Pomeranz, a Jewish mathematician and watchmaker, escapes into the wintry forest, leaving behind his beautiful, intelligent wife, Stefa. After the war, having evaded the concentration camps, they begin to build new lives – Stefa in Stalin’s Russia and Elisha in Israel, where, as they seek their reunion, another war is brewing.