Three Israeli soldiers were killed in an attack near Egypt's border after a gunman wearing an Egyptian police uniform opened fire yesterday. It is the first deadly exchange between two countries along the demarcation in more than a decade.<br />''<br />''The Israeli military said an Egyptian policeman shot and killed two soldiers while they secured a military post at the Egyptian border. It said the Egyptian officer and a third Israeli soldier were killed in a confrontation inside Israeli territory hours later.<br />''<br />''Meanwhile, the Egyptian military said, an Egyptian border guard crossed the border security barrier and exchanged fire with Israeli forces while he was chasing drug traffickers.<br />''The incident took place near the Nitzana and Al-Awja border crossing between Israel and Egypt.<br />