WWII World leaders gathered in Moscow for a Red Square parade commemorating victory against Nazi Germany in World War II, amid bitter East-West differences over the Soviet Union's post-war occupation of Europe. WWII Russian President Vladimir Putin said that the world must never again allow either a Cold War or a real war, in an address marking the annniversary of the end of World War II, and he hailed reconciliation between Russia and Germany as "one of the most important post-war achievements" in Europe. US A UN atomic agency estimate that North Korea could have six nuclear weapons ratcheted up worries in Washington that the Stalinist state may test a bomb as early as next month. Iraq An Australian Muslim leader left for Iraq to try to negotiate the release of a kidnapped Australian contractor, a day before the expiry of a deadline set by the hostage-takers for Canberra to start withdrawing its troops. Iraq Iraq's new defence minister, a Sunni Arab, took charge of the army as the government sought to strike back at the insurgency after a weekend that cost the lives of eight US soldiers. Iraq US forces have killed 75 insurgents, including foreign fighters, over the past 24 hours in an ongoing sweep of a desert region of northwest Iraq close to the Syrian border, the US military said. Afghanistan Two American soldiers were killed in a clash with a group of insurgents in eastern Afghanistan as the country experienced an upsurge in violence linked to the former Taliban regime. Mideast Clashes broke out between police and hundreds of Palestinian demonstrators in occupied east Jerusalem after Israeli authorities restrict access to the Holy City's flashpoint mosque compound.