It has been four months since Egypt's President Gamal Abdel Nasser ordered his big new win-the-war offensive in Yemen. In preparation, the Egyptian expeditionary force was beefed up to 48,000 men, and a fresh array of Soviet-made tanks, heavy artillery and jet planes was massed in the north, where the deposed Imam Badr makes his headquarters in a cave near the Saudi Arabian border. Republican President Abdullah Sallal fired his moderate Premier and gave Yemen's tough General Hassan Amri a mandate to take charge.
But the long-heralded offensive was an almost instant failure. The Egyptian motorized column was ambushed and...