Cale looks at St. John Paul II’s Apostolic Letter Rosarium Virginis Mariae and three different crises in the world today that praying the rosary can combat. Cale also looks at the doctrine of the perpetual virginity of Mary.

ROSARIUM VIRGINIS MARIAE

https://www.vatican.va/content/john-paul-ii/en/apost_letters/2002/documents/hf_jp-ii_apl_20021016_rosarium-virginis-mariae.html