I'm a devout Roman Catholic too and I vehemently disagree with you that there is such a close relation to Islam and Christianity. That's a bunch of ecumaniacal bull.
St. Alphonsus wrote this:
"But the holy monk (St. George of San Saba) having declared that Mahomet was a disciple of the devil, and that his followers were in a state of perdition, he also was condemned (to martyrdom) with his companions."
St. Francis' followers said this to the Muslims:
"We have come to preach faith in Jesus Christ to you, that you will renounce Mohammad, that wicked slave of the devil, and obtain everlasting life like us"
Villify them? I think they should be converted to the gospel of Jesus Christ, perhaps that would help them put down their arms and embrace peace once and for all.
"But the holy monk (St. George of San Saba) having declared that Mahomet was a disciple of the devil, and that his followers were in a state of perdition, he also was condemned (to martyrdom) with his companions."
Christians martyrs die for their faith.
Muslim martyrs kill for theirs.
Because one man, a holy one mind you, called Muhammed the devil doesn't make it true. I do reluctantly believe now that Islam does leave an open door for a violent interpretation, maybe you all are right about Islam. I hope that it isn't truly the way it appears here.