Moammar Gadhafi vowed a "long war" against the international military force that struck at his forces with airstrikes and dozens of cruise missiles that shook the Libyan capital early Sunday with the sound of explosions and anti-aircraft fire. In the capital of the rebel-held east, the Libyan leader's guns appeared to go silent.

State television said 48 people died in the U.S. and European strikes, which marked the widest international military effort since the Iraq war and came as the rebels saw a month's worth of gains reversed by Gadhafi's overwhelming firepower.

Rebels said the international strikes also hit an air force complex outside Misrata, the last rebel-held city in Libya's west. Gadhafi forces have bombarded the city from the complex, which houses a base and a military academy.

In Benghazi, the rebel capital and first city to fall to the uprising that began Feb. 15, people said the strikes happened just in time. Libyan government tanks and troops had reached the edges of the city on Saturday.

Though the U.S. and Europeans focused their attention on the no-fly zone, the U.N. resolution authorizing the action demanded a ceasefire and authorizes "all necessary means" to protect civilians.

Adm. Mike Mullen, the top U.S. military officer, said the goals of the international campaign "are limited and it isn't about seeing him go."

In the phone call to state television, Gadhafi said he would not let up on Benghazi and said the government had opened up weapons depots to all Libyans, who were now armed with "automatic weapons, mortars and bombs." State television said Gadhafi's supporters were converging on airports as human shields.

"We promise you a long war," he said.

The U.S. military said 112 Tomahawk cruise missiles were fired from American and British ships and submarines at more than 20 coastal targets to clear the way for air patrols to ground Libya's air force. French fighter jets fired the first salvos, carrying out several strikes in the rebel-held east, while British fighter jets also bombarded the North African nation.