Honolulu — President Barack Obama is turning from economic to security concerns in the Asia-Pacific region as he makes a long-delayed visit to Australia.

Obama, who twice canceled planned visits last year because of domestic priorities, sets out from Honolulu Tuesday morning for the capital of Canberra. Because he's flying over the international date line, he won't arrive in Australia until mid-afternoon local time Wednesday.

He'll spend a day and a half in Australia, dividing his time between Canberra and Darwin in the remote north, where he'll pay respects at a memorial to U.S. troops killed during a World War II attack and speak to U.S. and Australian military personnel.

Obama is expected to announce plans to expand the U.S.-Australia military relationship, including increasing access to bases and conducting more joint exercises.