A poster depicting Pope John Paul II (L) and Pope John XXIII is seen during a procession by Israeli Arab Christians in the northern city of Haifa May 11, 2014. The top Roman Catholic cleric in the Holy Land said on Sunday a spate of attacks he described as acts of terror against the church were poisoning the atmosphere ahead of this month's visit by Pope Francis, and urged Israel to arrest more perpetrators. The Baha'i shrine is seen in the background. REUTERS/Ammar Awad (ISRAEL - Tags: POLITICS RELIGION CIVIL UNREST)