In the midst of a renovation of the Tower of David Museum, located in one the oldest parts of Jerusalem, experts used sophisticated lasers to examine part of what was long thought to be an old Crusader fortress located near the Jaffa Gate. They found something unexpected, writes Amanda Borschel-Dan:

Jerusalem was conquered by the Crusaders in 1099 and retaken by a Muslim dynasty, the Ayyubids, in 1187. By 1212, the city was ruled by the nephew of Saladin, el-Melek el-Muatem Isa, also commonly known in English as al-Mu’azzam Isa. According to [the archaeologist Amit] Re’em, al-Mu’azzam Isa erected the fortifications of Jerusalem in approximately 1212, “and on every tower he put a large sign in Arabic, ‘I’m the great ruler el-Melek el-Muatem Isa.’” Alongside his name on this stone was the year, 1212.

Rarely do archaeologists hit the jackpot of a securely dated inscription. This one, explained Re’em, also sheds light on the mindset of the Muslim ruler as he faced down encroaching Crusader forces, who moved toward the city in 1217.

Re’em said that as the Crusaders made their way to the Holy Land, the sultan did not have a standing army available in Jerusalem, so he decided to tear down the city’s fortifications, thinking it would be easier to retake that way after the Crusaders presumably entered the city.

Eventually, the walls were rebuilt, and the stone with his name and date was used in the foundation of the walls of the western fortification of the citadel. There it would sit for centuries until being found by Re’em and his team, helping rewrite what we know about the citadel. “So if we have a date on the inscription—1212—and we find it in the foundation of the fortification it means that the fortification is from the 13th century, and not from the 12th century [as was previously thought]. So we are changing history,” said Re’em.

Early Friday morning, Israel attacked military installations near the Iranian cities of Isfahan and nearby Natanz, the latter being one of the hubs of the country’s nuclear program. Jerusalem is not taking credit for the attack, and none of the details are too certain, but it seems that the attack involved multiple drones, likely launched from within Iran, as well as one or more missiles fired from Syrian or Iraqi airspace. Strikes on Syrian radar systems shortly beforehand probably helped make the attack possible, and there were reportedly strikes on Iraq as well.

Iran itself is downplaying the attack, but the S-300 air-defense batteries in Isfahan appear to have been destroyed or damaged. This is a sophisticated Russian-made system positioned to protect the Natanz nuclear installation. In other words, Israel has demonstrated that Iran’s best technology can’t protect the country’s skies from the IDF. As Yossi Kuperwasser puts it, the attack, combined with the response to the assault on April 13,

clarified to the Iranians that whereas we [Israelis] are not as vulnerable as they thought, they are more vulnerable than they thought. They have difficulty hitting us, but we have no difficulty hitting them.

Nobody knows exactly how the operation was carried out. . . . It is good that a question mark hovers over . . . what exactly Israel did. Let’s keep them wondering. It is good for deniability and good for keeping the enemy uncertain.

The fact that we chose targets that were in the vicinity of a major nuclear facility but were linked to the Iranian missile and air forces was a good message. It communicated that we can reach other targets as well but, as we don’t want escalation, we chose targets nearby that were involved in the attack against Israel. I think it sends the message that if we want to, we can send a stronger message. Israel is not seeking escalation at the moment.