In this photo taken Wednesday, Oct. 20, 2010, American volunteers walk between olive trees, next to the settlement West Bank Jewish settlement of Eli, near Nablus. The olive tree has long been a symbol of the Palestinians' attachment to their homeland (AP Photo/Dan Balilty)

In this picture taken Monday, Oct. 18, 2010, a Palestinian woman harvests olives in the West Bank town of Jit, near Nablus. (AP Photo/Tara Todras-Whitehill)

In this photo taken Wednesday, Oct. 20, 2010, American volunteers pick olives next to the settlement West Bank Jewish settlement of Eli, near Nablus. The olive tree has long been a symbol of the Palestinians' attachment to their homeland, particularly rocky hills of the West Bank, its mystique enhanced by persistent efforts by Jewish settlers to disrupt the annual harvest. This year the stakes have been raised: The Palestinians have doubled the number of trees planted, and Jewish settlers have responded by ramping up their own olive production. At the heart of the matter is the long-standing struggle for control of the land, where possession is often determined by who works the land, and not always who owns it (AP Photo/Dan Balilty)

In this photo taken Wednesday, Oct. 20, 2010, an American volunteer picks olives as she stands on a net, next to the settlement West Bank Jewish settlement of Eli, near Nablus. (AP Photo/Dan Balilty)

In this picture taken Monday, Oct. 18, 2010, a donkey grazes under an olive tree in the West Bank town of Tel, as the village of Farata is seen in the background, near Nablus. The olive tree has long been a symbol of the Palestinians' attachment to their homeland (AP Photo/Tara Todras-Whitehill)

In this picture taken Monday, Oct. 18, 2010, a Palestinian woman talks with her son as they take a break from harvesting olives in the West Bank town of Burqa, near Nablus. The olive tree has long been a symbol of the Palestinians' attachment to their homeland, particularly rocky hills of the West Bank (AP Photo/Tara Todras-Whitehill)

In this picture taken Monday, Oct. 18, 2010, a Palestinian woman picks olives in the West Bank village of Farata, near Nablus. The olive tree has long been a symbol of the Palestinians' attachment to their homeland, particularly rocky hills of the West Bank, its mystique enhanced by persistent efforts (AP Photo/Tara Todras-Whitehill)

In this picture taken Monday, Oct. 18, 2010, olives are seen in a sorter in an olive oil making factory in the West Bank town of Burqa, near Nablus. (AP Photo/Tara Todras-Whitehill)

In this picture taken Monday, Oct. 18, 2010, a Palestinian worker monitors a stone press in an olive oil making factory in the West Bank town of Burqa, near Nablus. (AP Photo/Tara Todras-Whitehill)

In this picture taken Monday, Oct. 18, 2010, Palestinian boys take a break emptying bags of olives into a sorter at an olive oil factory in the West Bank town of Jit, near Nablus. (AP Photo/Tara Todras-Whitehill)

A Palestinian man pulls threads on a loom while making a keffiya headdress at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS SOCIETY)

A Palestinian man touches threads used for keffiya headdresses at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

A Palestinian man cuts threads on a loom while making a keffiya headdress at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

A Palestinian man cuts threads while making a keffiya headdress at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

A Palestinian man wears a keffiya headdress in the West Bank city of Hebron October 26, 2010. Some 100 keffiyas are produced per day at the Hirbawi family's textile factory which has been based in Hebron for over 40 years. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

A Palestinian man pulls fabric used for keffiya headdresses from a loom at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

A Palestinian man carries keffiya headdresses at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)
A Palestinian man piles up keffiya headdresses at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)
A Palestinian youth cycles past keffiya headdresses for sale that were made at the Hirbawi textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS)

Palestinian man Eyad Hamarsheh places a horse shoe, in the West Bank village of Yabed near Jenin city, Tuesday, Oct. 26, 2010. (AP Photo/Mohammed Ballas)

Palestinian Prime Minister Salam Fayyad stands on a ladder while picking olives with U.N. Middle East envoy Robert Serry (not pictured) during harvest in the West Bank village of Turmus Aya near Ramallah October 26, 2010. REUTERS/Mohamad Torokman (WEST BANK - Tags: AGRICULTURE POLITICS)

A Palestinian farmer holds peanuts during harvest in Khan Younis in the southern Gaza Strip October 26, 2010. REUTERS/Ibraheem Abu Mustafa (GAZA - Tags: AGRICULTURE SOCIETY BUSINESS)

Palestinian farmers sort peanuts during harvest in Khan Younis in the southern Gaza Strip October 26, 2010. REUTERS/Ibraheem Abu Mustafa (GAZA - Tags: AGRICULTURE BUSINESS SOCIETY)

An excavator operates at a construction site in the Palestinian refugee camp of Nahr el-Bared near the northern city of Tripoli, Lebanon, Wednesday Oct. 27, 2010. U.N. special coordinator for Lebanon Michael Williams inspected the first reconstructed buildings in the camp, which was destroyed in fighting between an al-Qaida-inspired Fatah Islam group and Lebanon's army in 2007. (AP Photo/Sharif Karim, Pool)

Gaza rubble : A Palestinian man on horseback rides past a site where Palestinian workers are collecting scrap material from the rubble of a hotel along the Gaza City waterfront.(AFP/Marco Longari)

Palestinian schoolgrils walk past a house, destroyed in Israel's 2008 Gaza offensive, in Beit Lahiya, northern Gaza Strip, Monday, Oct. 25, 2010. Arabic writing on the wall reads: 'Juma is a hero', right and 'the hero, martyr Juma', center. Identity of Juma is not known. (AP Photo/Hatem Moussa)

Greek Orthodox Patriarch of Jerusalem Metropolitan Theophilos (L) and Palestinian President Mahmoud Abbas (3rd L) look at renovations taking place inside the Church of the Nativity, revered as the site of Jesus's birth, in the West Bank town of Bethlehem October 25, 2010. REUTERS/Ammar Awad (WEST BANK - Tags: POLITICS RELIGION)

A man pours water on a Palestinian at Hamam al-Samra, a traditional Turkish bath, in Gaza City October 27, 2010. The Hamam al-Samra, open 24 hours daily with separate hours for men and women, is about 1,000 years old and is frequented by local Palestinians for bathing purposes as well as treatment for various ailments. REUTERS/Suhaib Salem (GAZA - Tags: SOCIETY HEALTH)

A Palestinian boy is reflected in a mirror as he sits at the Hamam al-Samra, a traditional Turkish bath, in Gaza City October 27, 2010. The Hamam al-Samra, open 24 hours daily with separate hours for men and women, is about 1,000 years old and is frequented by local Palestinians for bathing purposes as well as treatment for various ailments. REUTERS/Suhaib Salem (GAZA - Tags: SOCIETY)

A Palestinian boy relaxes at the Hamam al-Samra, a traditional Turkish bath, in Gaza City October 27, 2010. The Hamam al-Samra, open 24 hours daily with separate hours for men and women, is about 1,000 years old and is frequented by local Palestinians for bathing purposes as well as treatment for various ailments REUTERS/Suhaib Salem (GAZA - Tags: SOCIETY)