School remained closed in the South as rocket attacks by terrorists in Gaza continued on Thursday, after the Israel Air Force struck a rocket launching site in northern Gaza and a smuggling tunnel in the southern Strip overnight Wednesday. Red-alert sirens echoed through Beersheba as a Grad rocket launched in Gaza was intercepted by the Iron Dome anti-rocket defense system. Earlier, a shorter-range Kassam rocket exploded in the Sdot Hangev Regional Council near the town of Netivot. There were no casualties or damage reported in the attacks.No one was injured. On Tuesday night, a Grad-model Katyusha struck Netivot.Authorities in Beersheba announced on Wednesday night that schools in the city would once again close on Thursday.The decision was announced despite the Home Front Command saying that schools could remain open.Schools will also be closed in Ashdod, Ashkelon, Kiryat Gat, Kiryat Malachi, Gan Yavne (except for 12-graders studying in protected building) and the Bnei Shimon Regional Council.Before the renewed fire, OC Southern Command Maj.-Gen. Tal Russo warned on Wednesday that Israel might have to carry out a large ground operation in Gaza soon to stop the attacks.“The IDF is doing everything to enable residents of communities near Gaza to maintain a normal life,” he said. “I do not know how long it [the cease-fire] will last and we might need to launch a large-scale operation in the future.” Russo said that one of the problems was that no single organization was completely in control of the Gaza Strip.“There is no one who can just give an order and stop the rocket fire,” he said.Also on Wednesday, the IDF Home Front Command and the Home Front Defense Ministry held a simulation to prepare for possible missile attacks against Tel Aviv and the larger Gush Dan region.Hamas and Islamic Jihad are believed to have Fajr-5 Iranian artillery rockets that are capable of striking Tel Aviv. Hezbollah in Lebanon also has missiles such as the M- 600 that could reach Tel Aviv.Meanwhile, the IDF is also gearing up for a massive convergence on Israel’s borders later this month in what is being called the “Global March to Jerusalem.” Under the plan, on March 30, people from the Gaza Strip, Syria, Lebanon and the West Bank will begin marching toward Jerusalem.The event was scheduled, according to the movement’s website, to coincide with the 36th anniversary of Land Day, when six Arab Israelis were killed in clashes with security forces in the Galilee, and to raise awareness regarding Israel’s so-called “ethnic cleansing” of Jerusalem.The Meir Amit Intelligence and Terrorism Information Center released a report on Wednesday in which it said that Iran was actively supporting the organizers of the event.IDF sources said that they were prepared for the marches and possible demonstrations along the border. In June, about 100 Syrians crossed into Israel.“Since then we have purchased riot control equipment and developed new techniques and tactics to deal with such protests,” a senior IDF officer said.Due to the ongoing rocket fire, authorities in the Beersheba municipality announced that school would be canceled on Friday.Thursday's rocket attacks came after IAF warplanes targeted a rocket launching site and a smuggling tunnel in the southern Gaza Strip overnight Wednesday. Palestinians did not report casualties in those strikes. The IAF attacks were in response to two Grad-model Katyusha rockets that terrorists in Gaza fired towards Beersheba.The assessment within the army is that the rockets were fired by small, splinter terrorist groups and not by Islamic Jihad, which was behind the bulk of the rocket fire into Israel since Friday.One of the rockets hit outside the city and the second one was intercepted by the Iron Dome counter-rocket defense system.