Bitterly divergent views about the island’s future will persist, and may well become amplified, as Washington and Havana embark on an era of cautious engagement following the formal restoration of diplomatic relations. But that’s to be expected in response to such a historic and difficult change.For more than five decades, the enmity between the United States and Cuba has dominated the island’s politics, served as a pretext for government repression and shaped the lives of all Cubans in painful ways.NYT Editorial