NEW YORK (AP) — A conflict that has entangled the Vatican, American bishops and the largest umbrella group for U.S. nuns may seem to have erupted suddenly, but it actually has its roots in decades-old disputes over Roman Catholic teaching.

The headlines came in April, when the Vatican orthodoxy watchdog, the Congregation for the Doctrine of the Faith, concluded that the Leadership Conference of Women Religious had strayed far from authentic doctrine and gave three American bishops the authority to overhaul the organization.

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