The remains of a double-decker bus after a suspected terrorist bomb exploded on the bus in London.

Thursday's deadly blasts in London have triggered worldwide condemnations with the United Nations taking the lead.
In a strongly-worded resolution that was unanimously adopted, the UN Security Council said any act of terrorism is a threat to peace and security, urging all states to cooperate actively to bring perpetrators to justice.
It also expressed sympathy with victims of the blasts that have left at least 37 people dead and more than 700 others injured.
Leaders of the Group of Eight industrialized countries and five leading developing countries, namely Brazil, China, India, Mexico and South Africa, condemned the "barbaric attacks."
"We are united in our resolve to confront and defeat this terrorism that is an attack, not on one nation, but on all nations and on civilized people everywhere," said a statement issued in the name of all participants at the G8 plus five meeting.
The United States denounced the explosions, saying the attacks could only strengthen Britain's resolve to fight terror.
"This is obviously an attack that demonstrates the barbarity of the terrorists with whom we are dealing," US Secretary of State Condoleezza Rice said in a statement.
"It will, in fact, only strengthen the resolve of Great Britain ... in our determination to root out this scourge against humanity and against civilization," she added.
British Prime Minister Tony Blair and Spain's then Prime Minister Jose Maria Aznar were Washington's staunchest allies in the Iraq War in 2003.
Fatal training bombings in March 2004 in Madrid led to Aznar's defeat in elections. Blair, however, won re-election earlier this year.
The Arab League (AL) expressed shock at the appalling blasts. " We deeply regret such blasts which claimed the lives of a number of innocent people," said AL chief Amr Moussa.
The league rejects any such acts whether in London or any other European or Arab capital or anywhere in the world, he said.
Egyptian Foreign Minister Ahmed Abul Gheit condemned the terror attacks and expressed his country's condolences and sympathy with the British people.
Another influential AL member state, Syria, denounced the bombings. In an official statement, President Bashar al-Assad said: "On behalf of the Syrian people and myself, we denounce these awful actions that we condemn and strongly refuse."
In Tehran, the Foreign Ministry said in a statement that Iran disapproves and denounces resorting to terror to reach aims.
Kenyan President Mwai Kibaki said in his message: "Indeed, the heinous attacks against humanity should rekindle our joint efforts against terrorism and serve as the driving (force) for the world to unite against the vice."
Condemnations were voiced in many other countries, including Algeria, Australia, Canada, Jordan, Mozambique, Singapore and Tunisia.