In the Documents of Vatican II---we already recognized in the late 1960's that members of Christian communities are 'united' with us and in worshipping One Lord, in One Faith, in One Baptism.

What Francis asks of Catholics in no more vague that Jesus telling his disciples to "Baptize all in the name of the Father, and of the Son, and of the Holy Spirit".  How to do this---Jesus left up to the knowledge and common sense of those doing this.  Since Christians ARE baptized already with a baptism that the Catholic Church recognized already---what else is there? 


Working in non-Christian lands---again, the Documents of Vatican II recognize the many elements that unite non-Christians to Christians.  For any pope today to act like an army general issuing orders to the "troops" doesn't recognize the world in which we live.  It isn't like Palestine back in the First Century.