In Hungary, Croatia, and elsewhere in Eastern Europe, a pro-family, pro-life revolution and a rediscovery of Christian roots is occurring. While few in the American media have noticed, this trend should challenge those who simply lament Europe’s moral malaise. Unnoticed in the shadow of a secularized west, religion’s public role has been growing in the east since the collapse of communism. Since taking power in 2010, Prime Minister Viktor Orban—a charismatic veteran of Hungary’s anti-Communist underground—has victoriously stood at the forefront of what Americans call the culture wars. In 2011, Orban’s government ratified a new constitution that defines marriage as...