US President George W. Bush accepted blame for the US government's flawed response to Hurricane Katrina and promised one of the biggest rebuilding efforts the world has ever seen in the disaster zone. Afghanistan Less than 48 hours before Afghanistan's first parliamentary elections for a generation, a seventh candidate was reported killed by Taliban militants, underlining concerns that violence would mar the polls. Mideast Israel is preparing to widen a closed military zone into northern Gaza to bolster security after its historic pullout from the territory, in a move denounced by the Palestinians as continued occupation. Iraq A suicide car bomber killed 10 Shiite worshippers as they left Friday prayers in central Iraq, bringing the death toll to more than 20 on a third straight day of anti-Shiite violence, police said. Germany German Chancellor Gerhard Schroeder and opposition challenger Angela Merkel rallied their party faithful in the capital as campaigning for Sunday's general election reached a climax. UN Leaders from around the world were to hold a final day of meetings at the UN summit, with Iran's nuclear ambitions and condemnations of terrorism as top issues. Iran The United States has "broad agreement" from both developed and developing countries that international pressure must be brought to bear on Iran to stop nuclear fuel work that could be weapons-related, a US spokesman said. North Korea China set a Saturday deadline to sign off on a document aimed at breaking deadlocked North Korean disarmament talks after Pyongyang threatened to extract more plutonium if its demands were not met. OECD China's 25-year economic miracle is likely to be sustained for "some time" and its booming economy should grow by 9.0 percent this year and 9.2 percent in 2006, the OECD said in a new report. Health Indonesia confirmed its fourth death from bird flu as international concern mounts that the virus could mutate into a major killer.