Bush, G-8 face urgent issues

WASHINGTON (CNN) - President Bush heads to Japan on Saturday for his final G-8 summit of world leaders, as the global economy slumps, energy prices soar and food shortages loom in the developing world.

Bush says he will press other leaders of the Group of Eight industrialized nations to follow through on their commitments from earlier summits, but has warned there is nothing he or anyone else can do in the short term about oil prices.

He continued to advocate more drilling in currently protected areas of the U.S. as a medium-term fix for skyrocketing fuel costs.