As the title says, this is a historic event. May the Holy Spirit continue His work of peace among all Christians so that we may be one, as the Lord prayed and as the Father wills.
[News found via The Catholic Report.]
My thanks to Michael Trolly for pointing out that I had used "it" for the Holy Spirit, and so I corrected that to read "His work". And the emphasis works out, too. This is His work, for which we should be grateful and optimistic. We're hopeless with healing old wounds when left alone to ourselves.