In a meeting with Cardinal Peter Turkson, the president of the Vatican’s Pontifical Council for Justice and Peace, Grand Ayatollah Sayyed Hashem Hoseyni-Bushehri, the director of Islamic Seminaries across Iran, stressed upon the relations between Muslim and Christian leaders, saying they are a necessity for the current world and counted oppression, corruption, irreligiousness and anti-spirituality approaches as some of the joint challenges of both religions.