The Holy Union of Sarosian States is an alliance formed in 1562 between Rhodian troops and several Christian nations after wars left the Papacy unable to support itself. The alliance includes Hungary, Byzantines, Naples, the Papal State, and Urbino, though some members have grown independent or resent Rhodian rule. Rhodes faces challenges maintaining control over the union as some states may split off, threatening its authority over the collection of Christian states.