Former Danish Prime Minister Anders Fogh Rasmussen has started work as NATO's new secretary-general, part of a team assembled by President Barack Obama to lead the war effort in Afghanistan. He was greeted by senior alliance officials as he arrived at NATO headquarters. He did not speak to reporters. Fogh Rasmussen is due to outline his priorities, including naming a group of eminent persons who will draft NATO's new strategic concept. The mission statement will reflect the alliance's new role outside Europe, its traditional area of focus. His predecessor, Jaap de Hoop Scheffer who stepped down last week, has repeatedly warned that the war in Afghanistan represents a crucial test for the 60-year-old alliance.