The Vatican has a deep history of conflict mediation, with varying degrees of success. An effort by the pope to end the war in Ukraine would face long odds.

"The conditions for that will be negotiated between the two parties, as it can only be, because they know the details of a negotiation that nobody else would be aware of," Trump s

President Trump has again signaled that the United States may retreat from Russia-Ukraine peace negotiations. After a two-hour-long phone call with Russian President Vladimir Putin, Trump called the war a “European situation,