[1/5] Cardinal Raymond Leo Burke attends a consistory as Pope Francis elevates five Roman Catholic prelates to the rank of cardinal, at Saint Peter's Basilica at the Vatican, June 28, 2017.
The action was the latest latest clash between the pope and minority conservatives, who have accused him of undermining a number of traditional precepts.
Topics will include the role of women, greater acceptance of LGBT Catholics, social justice and the effects of climate change on the poor.
At the meeting, around 365 "members", including cardinals, bishops, lay people and, for the first time, women will vote on proposals.
Conservatives have taken issue with the fact that many lay people will have voting rights in a what is formally a Synod of Bishops.
Persons:
Cardinal Raymond Leo Burke, Pope Francis, Alessandro Bianchi, Raymond Burke, Walter Brandmueller of, Joseph Zen, Robert Sarah of Guinea, Juan Sandoval Iniquez, Francis, Cardinal Gerhard Mueller, Burke, Saint Pope John Paul II, Philip Pullella, Andrew Heavens
Organizations:
Vatican, REUTERS, CITY, America, National Catholic Register, Thomson
Locations:
Saint Peter's, Asia, Europe, Africa, United States, Walter Brandmueller of Germany, Hong Kong, Mexico, Germany, Vatican, U.S