Iraq A car bomb ripped through Shiite worshippers pouring out of a mosque after prayers for the Eid al-Adha holiday, killing at least 15 people and wounding 40, witnesses and medical sources said. US US President George W. Bush began his second term in office at the White House after vowing in a tough inauguration speech to overthrow tyranny and spread freedom and democracy to the "darkest corners" of the world. Mideast Palestinian security forces took up positions across the northern Gaza Strip with orders to prevent attacks by militants, winning plaudits for new leader Mahmud Abbas from Israel. Mideast A bus-load of Palestinians crossed the Rafah border crossing between Egypt and the southern Gaza Strip after the terminal was reopened for the first time in six weeks. Ireland An Irish appeal court annulled the only criminal conviction over the 1998 Omagh bombing, the single worst terrorist attack in Northern Ireland's history, ordering a retrial. Iraq Kidnappers who have threatened to kill eight Chinese nationals abducted in Iraq have said they would show "mercy" toward them if Beijing banned its citizens from going to the war-torn country, Al-Arabiya TV said. Asia The Muslim Eid al-Adha festival was a sombre, subdued affair in deeply religious Aceh with Indonesian President Susilo Bambang Yudhoyono leading tsunami survivors in prayer and mourning. Russia Scores of people who lost family in the Beslan school hostage massacre blocked a major highway for a second day, accusing Russian officials of not providing accountability for the tragedy and demanding an independent probe. Space The European robot lab Huygens found liquid methane on the Saturn satellite Titan, a chemical that seems to have shaped the moon's peculiar landscape and weather system, scientists said in their first detailed assessment of the probe's mission. Iraq The British officer responsible for three soldiers accused of abusing Iraqi civilians told their court martial of his mounting frustration at the constant looting of humanitarian aid. China British Foreign Secretary Jack Straw said he could not predict when a much-debated European arms embargo against China will be lifted, but reiterated it should not lead to more weapons sales.