Two suicide attackers targeted a multinational peacekeeping base April 26 on the northern Sinai Peninsula in Egypt. The attacks occurred near the Multinational Force and Observers (MFO) base in Gura, 16 miles west of the Gaza Strip. The first bomber detonated as a vehicle carrying an Egyptian police officer and peacekeepers from the MFO base passed by. The second bomber died as he tried to set off explosives against an Egyptian police vehicle that rushed to the site of the first blast. There also were reports of gunfire between militants and Egyptian police in the eastern part of the country. In the Gaza Strip, meanwhile, Palestinian security forces prevented a vehicle filled with explosives from entering Israel at the Karni border crossing, while Israeli Radio reported that another car bomb exploded near the Rafah crossing from Gaza into Egypt. After the triple bombings in the Red Sea tourist resort of Dahab on April 24, the follow-up attacks represent an attempt by militants to stop Egyptian forces from going after militant infrastructure in the region. Striking at MFO personnel and sending in a vehicle rigged as a bomb, together with the attacks against the resort, also are meant to unnerve the Israelis and upset Egyptian-Israeli relations. The attacks over the past three days, the audio communiqué from al Qaeda chief Osama bin Laden on April 23 and the first video statement from the jihadist movement's leader in Iraq, Abu Musab al-Zarqawi, will amplify security concerns in the region and beyond, especially for the Israelis who will feel as if they are caught in the middle of escalating jihadist activity from both the east and the west. The attacks in Egypt will complicate matters on the Israeli-Palestinian track as well as Israeli attempts to secure the Palestinian territories from jihadist infiltration. These latest attacks in Sinai underscore that a sophisticated jihadist infrastructure is in place on the peninsula, despite claims by Cairo that this is the work of Bedouins.