US US Vice President Dick Cheney and Democratic rival John Edwards clashed on Iraq, terrorism, and the economy in their only debate, trading frequently personal attacks 28 days before the November 2 election. US Former US administrator in Iraq Paul Bremer sparked a political storm by saying not enough US troops had been sent to back the invasion. Iraq More than 3,000 US and Iraqi forces launched an offensive on another rebel enclave in Iraq, as the war here again became a central focus in the closely fought US presidential election, with new questions raised about the decision to invade last year. Iraq US warplanes launched a direct attack on leaders of Islamic militant Abu Mussab al-Zarqawi's network as they met at a house in the rebel-held Iraqi city of Fallujah, the US military said. Mideast The United States vetoed an Arab-backed draft resolution at the UN Security Council, which would have called on Israel to end its deadly military operation in the Gaza Strip. Mideast A leading militant and a 13-year-old girl were among seven Palestinians killed as Israeli troops pressed a deadly week-old incursion into the northern Gaza Strip in the face of mounting international criticism. Afghanistan Wartime security was rolled out for Afghanistan's interim President Hamid Karzai as he addressed his first election campaign rally outside the capital amidst spiralling violence. Sudan British Prime Minister Tony Blair arrived in Sudan for talks with the country's leadership on how to resolve the humanitarian crisis in the country's war-torn western region of Darfur, an AFP reporter travelling with Blair said. US US lawmakers in the House of Representatives overwhelmingly rejected a proposal to require compulsory military service, a vote that Republicans hope will squash speculation about a return to the draft amid US struggles in Iraq. Nobel US scientists David J Gross, H David Politzer and Frank Wilczek on Tuesday won the 2004 Nobel Physics Prize for developing a theory that explains quarks, nature's tiniest building blocks, the Nobel jury said. US Legendary US comedian Rodney Dangerfield, best known for his phrase "I can't get no respect," died in Los Angeles after several weeks in coma, his publicist announced. He was 82.