David Eliezrie’s Undaunt­ed chron­i­cles the extra­or­di­nary courage of the Sixth Lubav­itch­er Rebbe, Rab­bi Yosef Yitzchak Schneer­sohn. While many reli­gious lead­ers fled Sovi­et oppres­sion, Rab­bi Schneer­sohn remained to pre­serve Jew­ish life, becom­ing known as ​“the last man stand­ing.” Sur­viv­ing tor­ture and a death sen­tence, his unwa­ver­ing defi­ance ulti­mate­ly secured his release. Draw­ing on rare archives, Eliezrie details the Rebbe’s dar­ing escape from war-torn Poland — bro­kered through a rare US-Nazi col­lab­o­ra­tion — and his dra­mat­ic arrival in the Unit­ed States. There, he bold­ly declared, ​“Amer­i­ca is no dif­fer­ent,” chal­leng­ing the belief that Judaism must assim­i­late. Even in exile, Rab­bi Schneer­sohn direct­ed Sovi­et Jew­ish resis­tance while trans­form­ing Amer­i­can Jew­ry. He estab­lished the nation’s first net­work of Jew­ish day schools, empow­ered women, and laid the ground­work for a post­war glob­al Jew­ish renais­sance along­side his suc­ces­sor, Rab­bi Men­achem Mendel Schneer­son. In an era of unpar­al­leled tur­moil, Undaunt­ed reveals how the Sixth Rebbe emerged as one of mod­ern history’s most con­se­quen­tial Jew­ish leaders.