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

With help from Felicia Schwartz, Veronika Melkozerova, Joe Gould and Daniel Lippman President DONALD TRUMP and his top aides have threatened to walk away from efforts to broker peace in Ukraine as attempts to break the logjam with Russia fall short.

"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