Two demonstrators jump from the top of a bonfire in Parliament Square, as students demonstrate against planned tuition fee increases in London, England, on Dec. 9. Dominic Lipinski/AP
Police officers scuffle with demonstrators, and the media, during a student protest in London, England, on Dec. 9. Stefan Wermuth/Reuters
British students try to remove barriers set up by British police officers during scuffles following a protest march on Dec. 9 in London, England against government plans to triple tuition fees. Lefteris Pitarakis/AP
Police officers try to control demonstrators during a student protest in London, England, on Dec. 9. Stefan Wermuth/Reuters
Police officers stand in Parliament Square, before a student protest, in London, England, on Dec. 9. Andrew Winning/Reuters
Thousands of students march through the streets of central London to the Houses of Parliament on Dec. 9. Sang Tan/AP
Standing on the plinth of a statue of wartime leader Winston Churchill, British students protest in London, England, on Dec. 9. Lefteris Pitarakis/AP
Students march during a protest against proposed tuition fee rises in Birmingham, England, on Dec. 8. Darren Staples/Reuters
Students protest against proposed tuition fee rises in Birmingham, England, on Dec. 8. Darren Staples/Reuters
A student protests in Parliament Square in London, England, on Dec. 9. Lefteris Pitarakis/AP
Saudi Arabia began airstrikes Wednesday against Houthi rebels in Yemen. Saudi Arabia, the United Arab Emirates, Kuwait, Qatar and Bahrain said they would answer a request from Yemeni President Abed Rabbo Mansour Hadi 'to protect Yemen.'
ByKen Dilanian, AP Intelligence Writer
Saudi Arabia began airstrikes Wednesday against Houthi rebel positions in Yemen, vowing that the Sunni kingdom will do "anything necessary" to protect its neighbor from Iran-backed Shiite rebels.