Yemeni anti-government demonstrators (top right) and government supporters hurl stones at each other during clashes in Sanaa, Yemen, on Thursday, the seventh day of protests. (Associated Press)
Yemeni protesters scuffle with government supporters during a rally demanding political reform and the resignation of President Ali Abdullah Saleh in Sanaa, Yemen. (AP Photo)
Yemeni anti-government protestors (right) scuffle with government supporters during a rally demanding political reform and the resignation of President Ali Abdullah Saleh in Sanaa, Yemen, on Sunday, Feb. 13, 2011. (AP Photo/Hani Mohammed)
Yemen's Foreign Minister Abu Bakr Abdullah Al Qirbi speaks with the Associated Press at Yemen's Embassy in Brussels, Thursday, Feb. 3 2011. Tens of thousands of opponents and supporters of Yemen's president staged dueling demonstrations on Thursday, underscoring deep divisions in a nation seen by the Obama administration as a key ally in its fight against Islamic militants. (AP Photo/Virginia Mayo)
Supporters of Yemeni President Ali Abdullah Saleh hold banners and raise his portraits during a rally in support of the Saleh government in Sanaa, Yemen, Thursday, Feb. 3, 2011. Thousands of opponents of Yemen's government and its supporters demonstrated in the capital and other cities a day after the president pledged not to seek another term in office. (AP Photo/Hani Mohammed)
A supporter of Yemeni President Ali Abdullah Saleh waves his portrait after climbing up a pole during a rally in support of the Saleh government in Sanaa, Yemen, Thursday, Feb. 3, 2011. Thousands of opponents of Yemen's government and its supporters demonstrated in the capital and other cities a day after the president pledged not to seek another term in office. (AP Photo/Hani Mohammed)
Supporters of Yemeni President Ali Abdullah Saleh hold banners and raise his portraits during a rally in support of the Saleh government in Sanaa,Yemen, Thursday, Feb. 3, 2011.Thousands of opponents of Yemen's government and its supporters are demonstrating in the capital and other cities a day after the president pledged not to seek another term in office. (AP Photo/Hani Mohammed)
Supporters of Yemeni President Ali Abdullah Saleh, in power since 1978, rally in Sanaa on Wednesday. He told parliament Wednesday that he will not seek another term or turn over power to his son. (Associated Press)
ENOUGH: Tens of thousands of demonstrators in Sanaa, Yemen, rally Thursday for an end to the 32-year rule of President Ali Abdullah Saleh after efforts to amend the constitution to extend his term. The recent uprising in Tunisia inspired protests in Yemen and Egypt. (Associated Press)
Yemeni demonstrators hold their national flags during a rally calling for an end to the government of President Ali Abdullah Saleh, in Sanaa, Yemen, Thursday, Jan. 27, 2011. (AP Photo/Hani Mohammed)
Yemeni students chant slogans calling on their president Ali Abdullah Saleh to leave the government and follow Tunisian ousted President Zine El Abidine Ben Ali into exile during a protest Saturday in Sanaa, Yemen. (Associated Press)
Yemeni President Ali Abdullah Saleh greets Secretary of State Hillary Rodham Clinton as she arrives at the presidential palace in Sanaa, Yemen, on Tuesday. Mrs. Clinton's unannounced visit aimed to shore up ties with a fragile and problematic ally. (Associated Press)
Yemeni President Ali Abdullah Saleh, right, walks with Secretary of State Hillary Rodham Clinton, as she arrives at the Presidential Palace in Sanaa, Yemen, Tuesday, Jan. 11, 2011. (AP Photo/Hani Mohammed)
A Yemeni girl wearing a new dress as she stands in an alley of the old city, on the first day of the Muslim holiday of Eid al-Adha, or Feast of the Sacrifice, in Sanaa, Yemen, Tuesday, Nov. 16, 2010. (AP Photo/Muhammed Muheisen)
Yemeni girls display their hands painted with henna paste while playing in an alley of the old city, on the first day of the Muslim holiday of Eid al-Adha, or Feast of the Sacrifice, in Sanaa, Yemen, Tuesday, Nov. 16, 2010. (AP Photo/Muhammed Muheisen)
Two Yemeni sisters dressed as angels, hold hands while walking in an alley of the old city, on the first day of the Muslim holiday of Eid al-Adha, or Feast of the Sacrifice, in Sanaa, Yemen, Tuesday, Nov. 16, 2010.(AP Photo/Muhammed Muheisen)
In 2010, parts of a computer printer with explosives loaded into its toner cartridge were found in a package on board a cargo plane in Dubai, United Arab Emirates, en route from Yemen. Dubai police say the bomb, discovered in a shipment of air cargo from Yemen bound for the United States, contained the powerful explosive PETN and bore the hallmarks of al Qaeda. (AP Photo)
Yemeni policemen patrol the area near the courthouse during the trial session of Saleh al-Shawish in San'a, Yemen, on Monday. A court in Yemen has sentenced the al Qaeda militant to death after convicting him of involvement in terror attacks and manufacturing explosives. After hearing Monday's verdict, al-Shawish vowed that al Qaeda will exact revenge on Yemen's government. (Associated Press)