Sydney Morning Herald: YOKOHAMA: Julia Gillard and the United States President Barack Obama have used their first official meeting as leaders to discuss an exit strategy from the war in Afghanistan and restate a commitment to a global assault on climate change. Meeting on the sidelines of yesterday’s Asia-Pacific Economic Co-operation summit, Ms Gillard and Mr Obama exchanged notes before next weekend’s NATO summit in the Portuguese capital of Lisbon, where a broader exit strategy from Afghanistan will be high on the…