Britain Four near-simultaneous blasts on London subway trains and a bus sent screaming passengers fleeing in panic, a chilling echo of the deadliest ever terror attack on Britain two weeks earlier. Britain London's police chief said it was too soon to say if there was a connection between Thursday's attacks in the British capital and deadly bombings there two weeks ago, but he aknowledged there were similarities. Britain Pakistan's President Pervez Musharraf, who this week ordered sweeping raids against Islamic militants after the July 7 London bombings, urged Britain to crack down with equal zeal on home-grown extremists. Mideast US Secretary of State Condoleezza Rice arrived in Israel for talks as part of a final push to ensure the success of next month's pullout from Gaza as Israel considered bringing the withdrawal forward. Iraq Two Algerian diplomats were kidnapped near their Baghdad embassy, as Sunnis walked out of Iraq's constitution drafting committee, just days before it was due to be submitted to parliament. China China revalued its currency and scrapped the yuan's decade-old peg to the dollar in favour of a managed float against a basket of currencies, caving in to intense pressure from trading partners led by the United States. Niger After months of desperate appeals, emergency food aid for Niger began arriving from Western countries, even as the government estimated that 1.6 million people in the vast Sahel nation are at "critical" risk from hunger.