Egyptian security officials have intercepted surface-to-air missiles, most of them shoulder-launched, on the road to Sinai and in the smuggling tunnels connecting Egypt to the Gaza Strip since Moammar Gaddafi fell from power in Libya in August, a military official in Cairo said. Arms traders said the weapons available on Sinai’s clandestine market include rockets and antiaircraft guns…

The seizures raise fresh concerns about security along the sensitive area that borders the Gaza Strip and Israel, at a time when unrest is roiling the region. The addition of shoulder-fired antiaircraft missiles to arsenals of Palestinian fighters in Gaza could add significantly to the threat against Israel, whose helicopters and fixed-wing aircraft frequently patrol the strip, which is controlled by the militant Islamist group Hamas…

Concerns about security in the Sinai have been growing in Egypt and among Israeli and American officials, who have called on Egypt to do more to protect the sensitive area, which borders the Gaza Strip and Israel. In the months since Egypt’s January-February revolution, the pipeline that feeds natural gas to Israel has been attacked seven times by militants. A cross-border attack by assailants in August killed eight Israeli civilians and prompted an Israeli counterstrike that killed six Egyptian troops, including three who later died of their wounds