Kabul, AFGHANISTAN: Afghan demonstrators throw stones at a coalition military vehicle during a demonstration in Kabul, 29 May 2006. US troops shot dead at least four people when they opened fire on a crowd of Afghans demonstrating after an accident involving a coalition military vehicle. An intelligence official who did not want to be identified said initial reports were that seven people had been killed and nine wounded in the incident in the north of the Afghan capital. AFP PHOTO/ SHAH Marai (Photo credit should read SHAH MARAI/AFP/Getty Images)

Kabul, AFGHANISTAN: Afghan demonstrators carry a wounded man during a demonstration in Kabul, 29 May 2006. US troops shot dead at least four people when they opened fire on a crowd of Afghans demonstrating after an accident involving a coalition military vehicle

Kabul, AFGHANISTAN: Afghan demonstrators carry the body of a victim during a demonstration in Kabul, 29 May 2006

Kabul, AFGHANISTAN: An Afghan police vechile burns after being set alight by angry demonstrators after an accident involving a coalition military vechile in Kabul, 29 May 2006. US troops shot dead at least four people when they opened fire on a crowd of Afghans demonstrating after an accident involving a coalition military vehicle. Several more people were believed killed in demonstrations which erupted after the incident when angry protesters torched a police station and vehicles, prompting police to start shooting, witnesses and reports said. AFP PHOTO/ SHAH Marai (Photo credit should read SHAH MARAI/AFP/Getty Images)

Kabul, AFGHANISTAN: Afghan demonstrators dive to the ground to avoid bullets fired from a coalition vehicle (unseen) in Kabul, 29 May 2006

Kabul, AFGHANISTAN: Afghan demonstrators chant 'Death to America, Death to (President Hamid) Karzai' during a demonstration in Kabul, 29 May 2006

Kabul, AFGHANISTAN: Afghan demonstrators throw stones at a coalition military vehicle during a demonstration in Kabul

Afghan National Army soldiers inspect burnt vehicles following riots in Kabul, 29 May 2006.

Basra, IRAQ: Iraqi Police and British soldiers patrol a street in the southern city of Basra 29 May 2006. Two out of four British soldiers hit yesterday by a road side bomb in southern Iraq were killed, the Ministry of Defence in London said today. The other two suffered minor injuries in the blast, which took place yesterday evening in the main southern city of Basra, where British forces are based. AFP PHOTO/ESSAM AL-SUDANI (Photo credit should read ESSAM AL-SUDANI/AFP/Getty Images)

BAGHDAD, IRAQ - MAY 29: Iraqi firemen put out a fire in a US army armored vehicle after it was hit by a roadside bomb on May 29, 2006 in Baghdad, Iraq. (Photo by Akram Saleh/Getty Images)

BAGHDAD, IRAQ - MAY 29: Iraqi policemen stand guard at the scene of a car bomb explosion on May 29, 2006 in Baghdad, Iraq. A car bomb exploded in central Baghdad when an Iraqi police patrol passed by killing one policeman and injuring four others, according to the Iraqi police. (Photo by Akram Saleh/Getty Images)

.S. President George W. Bush signs one of a pair of military-related bills into law in the Oval Office in Washington, May 29, 2006. The Respect for America's Fallen Heroes Act limits some protests at military funerals, and the Heroes Earned Retirement Opportunities Act changes the way members of the military can contribute to individual retirement accounts from combat pay.

An Afghan soldier stands guard after riots in Kabul, Afghanistan, May 29, 2006. Thousands marched angrily through Kabul on Monday after security forces opened fire on protesters, killing at least seven Afghans and wounding 40 in clashes sparked by a fatal traffic accident involving a U.S. military truck.

A U.N. peacekeeper observes the border with Israel using binoculars at Al-Abbad area in south Lebanon May 29 2006. U.N. peacekeepers brokered a ceasefire on Sunday to end clashes between Israeli forces and guerrillas along the Lebanon-Israeli border,a U.N. official said.

An aerial view shows lava spewing at the top of the 2,361 metre (7,746 ft) Mt. Karthala near Moroni, the capital of the Comoros Island, May 29, 2006. Lava bubbled from a volcano in the Comoros on Monday, frightening thousands on the Indian Ocean archipelago's largest island who feared a full-blown eruption as they waited to see where the molten rock might flow.

An Iraqi seeks help for an injured woman from a soldier at the scene of a bomb attack in Adhamiya, a predominantly Sunni district, in Baghdad May 29, 2006. A car bomb targeting an Iraqi army patrol killed eight people in the Adhamiya district, police sources said, one of several bomb attacks to hit the Iraqi capital on Monday. Most of the victims were students from a nearby school, the sources added. Seventeen people were wounded in the blast.

An Iraqi soldier searches for snipers at the scene of a bomb attack in Adhamiya, a predominantly Sunni district, in Baghdad May 29, 2006.