Britain Four explosions tore into packed underground trains and ripped apart a double decker bus, massacring at least 37 people and wounding 700 in the worst peacetime attack on London. Britain Blood-smattered and crying, thousands of people staggered into the streets of London, scrambling to escape the terror of bomb attacks on the underground and a bus that left 37 dead and 700 wounded. Britain A group calling itself the Organisation of Al-Qaeda Jihad in Europe claimed the deadly attacks in London and threatened similar strikes on Italy and other US allies with troops in Iraq and Afghanistan. Britain A deadly wave of bombings in London bears the "hallmarks of Al-Qaeda", British Foreign Secretary Jack Straw said at the G8 summit. G8 Group of Eight leaders vowed to press ahead with action on African poverty and global warming at their annual summit here but found themselves thrust into the fight against terrorism by the bloody carnage in London. Britain Leaders from around the world expressed shock and anger over the deadly blasts in the heart of London that killed at least 37 people and voiced determination to crush the terrorist threat. Britain Governments across Europe beefed up security following a series of deadly rush-hour bombings in London, with police stepping up patrols in airports, rail stations and public transport systems. US The United States raised its terror alert for mass transit to "high" after deadly bomb blasts rocked the London rush hour, and vowed "evil" terrorists would not triumph. Iraq Egypt's kidnapped envoy to Iraq was killed by his Al-Qaeda-linked captors, the Egyptian presidency said, as Iraqi President Jalal Talabani described foreign militants linked to the insurgency as "a plague" on his country. Afghanistan Numerous officials in Afghan President Hamid Karzai's government are implicated in war crimes that took place at the start of the country's bloody civil war in the early 1990s, Human Rights Watch said in a report. Philippines Philippine President Gloria Arroyo, facing a political crisis over allegations of vote fraud, said she had asked her cabinet members to step down but would not herself resign. Mideast Palestinian prime minister Ahmed Qorei incited mounting anger from MPs for failing to address continuing security chaos during a defence of his government's record in parliament.