Libyan government has rejected a rebel offer for a cease-fire.

Libyan government spokesman Musa Ibrahim scorned the offer late on April 1, saying, "If that's not crazy, I don't know what is."

The rebel leadership has said its fighters would agree to a cease-fire if Libyan leader Muammar Qaddafi withdrew his forces from all of Libya's cities and respected the rights of Libyans to choose sides.

Reports say that the morale of Libya's rebels has been boosted by the appearance of more trained and armed fighters, mostly former soldiers and officers, at the rebel front lines.

On April 1, only former military officers and the lightly trained volunteers serving under them were allowed on the front lines.

Some were recent arrivals, hoping to rally against forces loyal to the Libyan leader who have pushed rebels back about 160 kilometers this week.

It is too early to say if the improvements will tip the fight in the rebels' favor.

It was also unclear where the front line was on April 1.

A day earlier, the opposition moved into Brega, about 80 kilometers east of Ajdabiya, but were again pushed out by Qaddafi's forces.

Meanwhile, NATO said on April 1 that 74 air strikes had been carried out against Libya on March 31, the first day the Western alliance commanded military operations.

NATO took over from an impromptu coalition coordinated by the United States, with France and Britain playing leading roles.

Also, a Qaddafi envoy reportedly traveled to London for secret talks aimed at mapping out an exit strategy for the Libyan leader.