Britain British police investigating the London bombings confronted doubts in Egypt about whether an Egyptian biochemist, arrested in Cairo during a visit from England, was involved in the plot. Iraq Twelve suicide bombers blew themselves up in separate attacks in Baghdad and northern Iraq, killing at least 28 people and wounding more than 100, including seven US soldiers. Mideast Israeli helicopters continued rocket attacks against the radical Islamic group Hamas after six of its members were killed in Israeli air strikes on Gaza City and the West Bank. Pakistan Pakistani security forces found the bodies of 24 suspected militants who died after US-led troops fired at them across the border from southeastern Afghanistan, officials said. Kenya An Italian Roman Catholic bishop was killed in central Kenya, police and church officials said, as authorities investigated whether it was linked to a grisly cycle of inter-clan violence in the volatile north. US A US Appeals Court ruled that controversial military trials for Guantanamo detainees are legal, handing the government a victory in its handling of 'war on terror' inmates. Britain Harry Potter author J.K. Rowling unveiled the latest adventure in the boy wizard series to the ecstatic delight of millions of fans worldwide who look set to conjure up record-breaking sales. US NASA scrambled to repair the Discovery space shuttle, still hoping for a July launch to avoid another lengthy delay of the first shuttle mission since the 2003 Columbia disaster. Finland Aceh peace talks in Helsinki appeared to be back on track as Jakarta agreed to withdraw its troops from the troubled province and negotiators once again claimed to be near a deal on the sticky issue of political participation. Thailand Thai Prime Minister Thaksin Shinawatra insisted his government would not abuse sweeping powers he took from the military after a dramatic attack by suspected Islamic insurgents on a southern town. China China could use nuclear weapons to retaliate against the United States if it attacked in any conflict over Taiwan, reports said, citing a Chinese general.