most punishing air strikes to date. at least 40 thunderous daylight attacks sent plumes of smoke above the libyan leader compound in tripoli. explosions continued into the early hours this morning. now to the growing terror threat in yemen where violence continues to escalate. it turns out that president saleh was much more seriously wounded than reported before he left the country. and the situation on the ground is so dangerous the elite u.s. forces there have been given new orders. here is martha raddatz. >> reporter: we saw them ourselves during a recent visit to yemen, american special forces darting from our cameras but clearly training yemeni forces to kill or capture al qaeda terrorists. now that effort has been halted. the chaos in yemen is growing. with the president fleeing yemen after an attack. he is now fighting for his life with burns across nearly half his body. diane sawyer asked general david petraeus and robert gates about