A very hollow death.
I'm sure that the millions of people watching the news tonight, after being informed that an al-Qaida leader they've never heard of has been killed, will be thoroughly nonplussed, as they in fact should be. The very nature of al-Qaida and takfirist militancy means that leaders, as important as they are, are dispensable and where one is taken down, another will spring up in his place as surely as the sun will rise again tomorrow, much like the many-headed hydra of Greek mythology. Even if both bin Laden and al-Zawahiri were killed or captured tomorrow, it would likely be only a temporary setback that could, if anything, make the fight against the creed they espouse even more difficult. If the jihad launched against the Soviets in Afghanistan was the opening shot of modern Salafist militancy and 9/11 the event that destroyed the original base, then Iraq was the clarion call which has energised and mobilised a new generation.
As for Abu Laith al-Libi, his death apparently confirmed by al-Fajr media, an al-Qaida go-between, who was the leader of the Libyan Islamic Fighting Group which allied itself with al-Qaida last year, as well as involved in the on-going insurgency in Warizistan and Afghanistan, he has now achieved his no doubt long lusted after "martyrdom". Hope you enjoy choking on all those cocks in hell, Abu.