World leaders meeting at the G8 conference in Gleneagles, Scotland issued statements condeming the attacks in London in this AP story.

German Chancellor Gerhard Schroeder called the blasts “perfidious attacks” and said terrorism should be fought “with all the means at our disposal.” French President Jacques Chirac said the attacks were “indescribable” and that “this scorn for human life is something we must fight with ever greater firmness.”

Canadian Prime Minister Paul Martin expressed condolences to the victims of the blasts while Russian President Valdimir Putin said through spokesman Alexei Gromov that “no matter where such inhuman crimes occur – in London, New York, Moscow or other countries of the world – they demand unconditional condemnation.”

And in this one as well:

Spain, bitterly familiar with terror after train bombings in Madrid killed 191 people last year, put its security forces on maximum alert, posting army and police units to watch over airports, train stations and shopping centers.

The government of Prime Minister Jose Luis Rodriguez Zapatero offered its “unconditional help to chase the criminals who perpetrated such a repugnant attack.”

A similar response came from France, the object of attacks in the 1990s. Prime Minister Dominique de Villepin ordered the alert level raised and promised Britain the “immediate, full and complete collaboration” of French intelligence.

“It is a drama for Great Britain. It is a drama for all of Europe,” Villepin said.

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In Denmark, former Foreign Minister Mogens Lykketoft said what others were remembering with likely dread: “This is the continuation of Sept. 11 and the attacks in Madrid … No one can feel safe.”

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As in many other European countries, Belgian Prime Minister Guy Verhofstadt called an emergency response meeting to assess security measures in Brussels, which houses the European Union and NATO.

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At Vatican City, Pope Benedict XVI called the attacks “barbaric acts against humanity,” and said in a telegram to Cardinal Cormac Murphy O’Connor, archbishop of Westminster, that he was praying for families of the victims.

“This is all wanton violence,” Irish Prime Minister Bertie Ahern said after an audience with the pope.

Security in Copenhagen’s new driverless underground system was stepped up, and, in Norway, the Foreign Ministry summoned its crisis team. In the Swedish capital, Stockholm, top police chiefs met.

Candles appeared in front of the British Embassy in Warsaw, Poland, shortly after news of the attacks flashed around the world.

Australia’s national counterterrorism group met late Thursday, and Canberra set up a hot line for relatives of the hundreds of thousands Australians who live in Britain.

In Turkey, Foreign Minister Abdullah Gul urged greater international cooperation against terrorism, saying it is a mistake “if we make a distinction between ‘my terrorist and his terrorist.’”