See additional gulf-related stories on A2 and A6.Iraq claimed Monday it had crushed the revolt in the south, but rebel leaders contended the uprising was growing. Travelers said the army had set up checkpoints around Baghdad and was searching for weapons.

The rebel leaders, speaking in Syria, reported new fighting near al-Kut, 100 miles southeast of Baghdad, and Kurdish guerrillas said they were holding on to gains in northern Iraq.U.S. military officials, meanwhile, met with Iraqi officers for a second time Sunday and warned any movement of combat aircraft within Iraq would be a violation of the conditional cease-fire and the aircraft would be shot down.

"You fly, you die," Army Maj. Thomas Lund said Sunday in giving the gist of the American message delivered during a 30-minute meeting in U.S.-occupied territory near the Kuwaiti-Iraqi border.

Lund, an officer at the border post, said Iraq requested the meeting to discuss the provision in the March 3 cease-fire agreement that prohibits Iraq from flying aircraft in its territory.

Quoting Iraqi refugees, Tehran Radio, monitored in Athens, Greece, said Sunday that troops loyal to Saddam Hussein regained control of the towns of Zubair and Abul Khasib, about 10 miles to the south and east of Basra.

In the north, Iraqi Kurdish rebels were in control of five provinces, including Dohuk and Arbil bordering Turkey, Tehran Radio said.

Government forces surrounded Basra, and heavy fighting was raging there and in other parts of southern Iraq, where Saddam's troops used Shiite Muslim prisoners as human shields while advancing on the rebels, the radio said.

Neighboring Iran declared a day of mourning Monday for what it called the destruction of Muslim shrines by Saddam's loyalists.

Iran supports the Shiite Muslim rebels in Iraq's predominately Shiite south, and its official news agency on Sunday quoted Iraqi refugees as saying Saddam's Republican Guard was using napalm to crush the southern rebellion.

Kuwaiti officials, meanwhile, indicated PLO leader Yasser Arafat's role in the postwar Middle East would be diminished by his support for Saddam.

Saleh Mohammed Saleh, a Kuwaiti Foreign Ministry official, told Egypt's Middle East News Agency that "it is not likely that Kuwait would deal again in the future with Yasser Arafat" but that it would continue aiding the PLO.