KEY POINTS
  • As Japan steps up to counter China's growing influence in Asia Pacific, Tokyo's efforts may not be as effective without "commitment" from the United States, an expert told CNBC.
  • Without U.S. support, regional countries as well as Washington could be disadvantaged, said Stephen Nagy from the International Christian University.
  • "My concern is that the region will become more dominated by geopolitics between China and other regional powers — that the consumer markets won't be open to American and other powers," said Nagy.

As Japan steps up to counter China's growing influence in Asia Pacific, Tokyo's efforts may not be as effective without "commitment" from the United States — a situation which may disadvantage regional countries as well as Washington, an expert told CNBC.

Tokyo's efforts to counter Beijing's influence in Asia have to be balanced with the U.S. asserting its economic commitment to the region, said Stephen Nagy, senior associate professor in the department of politics and international studies at the International Christian University in Tokyo.