The Vatican, the Imam, the three unapproved prayers and interfaith movement origins in general.

I Know It's Going To Be Hard For You To Believe, But The Pope Invited a Muslim To Pray At The Vatican, and the Muslim Used the Opportunity to Insult All Non-Muslims

Video of the Imam's prayer: "...so make us victorious over the tribe of unbelievers."

Vlad Tepes  ... "But the importance of the event should not be underestimated. The meaning of the 3 extra verses you are about to see with great attention to detail and with highly acclaimed and authoritative Islamic texts,  will be shown to be basically a direct insult to the Jews and Christians in attendance. The Vatican’s response was to write some pot-boiler sophistry to deflect the imam’s insult in order to not take away from the intended spirit of the event one would assume. But this event was broadcast live to the entire Islamic world and it is highly likely that a large percentage of muslims watching knew exactly what took place, not to mention a number of Christian and other minority groups living in Islamic lands, even if nearly no Westerners did.

"This is not without importance and not without consequence."...

 Stephen Coughlin Vatican analysis of peace ceremony June 8, 2014  "Vlad Tepes has conducted a comprehensive interview with Maj. (ret.) Stephen Coughlin, who is one of the foremost non-Muslim American experts on Islamic law. Maj. Coughlin examines the context of what the imam’s prayer at the Vatican as it relates to Islamic law. He uses his explanatory material — from authoritative sources of Islamic law — to expose the strategy behind Muslim participation in the prayer event at the Vatican, and the Muslim Brotherhood’s exploitation of the “interfaith” movement to accomplish its own ends."
 

   
A Complete Collapse of Reason

... "Consider this passage from Reliance of the Traveller, chapter O, o9.0:

Jihad means to wage war against non-Muslims, and is etymologically derived from the word mujahada, signifying warfare to establish the religion. And it is the lesser jihad.
[…]
The scriptural basis for jihad, prior to scholarly consensus is such Koranic verses as:

• Fighting is prescribed for you (Koran 2:216)
  
• Slay them wherever you find them (Koran 4:89)
  
• Fight the idolators utterly (Koran 9:36)



Post above from Gates of Vienna

Always keep in mind these words: Taqiyya and Kitman when Muslims speak of their relations with the non-Muslim world.