Let's see now, let me rack my brain, which pope was it who tried to place an honorary red cardinal's hat on Hans Urs von Balthasar, the teacher of "universal salvation"? Was it Pope Leo XII? No, I remember, it was just a couple years ago, and it was Pope John Paul II. We can thank divine providence that von Balthasar dropped dead just 2 days before the ceremony, so his heretical teachings were never crowned with this papal sanction.
And let me think, who was the pope who appointed Cardinal Kasper to the most visible position in the entire Vatican hierarchy where he can travel around the world telling people of all religions that there is no need for them to become Catholics? It was pope John Paul II. He's the one who picked Cardinal Kasper and placed him in that job.
And who was the pope who convened the 2 scandalous Assissi meetings? It was the same pope as the 2 questions above, and the same pope who is still proclaiming that "ecumenism" must be the guiding principle for every action of the Church.