The resignation of Pope Benedict XVI has demonstrated the process by which a pope might step down and be replaced.

The resignation of Pope Benedict XVI has demonstrated the process by which a pope might step down and be replaced.

When Benedict XVI became the first pope to resign in 600 years it sent shockwaves through the Catholic Church. Now, after spending two weeks in hospital battling pneumonia, the speculation in the Vatican is whether his successor Pope Francis might do the same.

Pope Benedict XVI officially stepped down as leader of the Roman Catholic Church, citing a "lack of strength of mind and body."

Pope Francis removed Strickland after he refused to resign from office. The Dicastery for Bishops investigated "all aspects" of Strickland's governance and leadership and concluded that "the continuation in office of Bishop Strickland was not feasible." The department recommended that Strickland be asked to resign.

Concerns over Pope Francis' health have mounted in recent years as have questions about his succession. Here's what we know.

Pope Francis was elected as the leader of the Catholic Church on March 13, 2013, following the resignation of Pope Benedict XVI. His papacy has been marked by efforts to modernize the church, address social justice issues, and promote interfaith dialogue.

Concerns over Pope Francis' health have mounted in recent years as have questions about his succession. Here's what we know.