US President Barack Obama (C) stands with former Chief of Defense Force General Peter Cosgrove (L) as he signes a guest book after touring the Australian War Memorial in Canberra on November 17, 2011. President Obama is in Australia to mark the 60th anniversary of their security alliance and to bolster Washington’s presence in the strategically important region. AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)