Reports quoting Suez Canal officials say, two Iranian naval ships have entered Egypt's Suez Canal to pass through for Mediterranean. A patrol frigate and a supply ship are the first naval vessels to go through the canal since Iran's 1979 Islamic revolution, after which diplomatic ties between Egypt and Iran were strained.Israel has said that it has taken a serious view of the passage of the ships. Israeli Prime Minister Binyamin Netanyahu has denounced the ships' arrival in the region as an Iranian power play. Israel's foreign minister Avigdor Lieberman has described this as a provocation by Iran. But an Iranian diplomat said that, this will be a routine visit, within international law, in line with the co-operation between Iran and Syria, who have strategic ties. The canal is a vital global trading route and a major source of revenue for the Egyptian authorities.