Why China, Japan and South Korea must learn to get along
Why China, Japan and South Korea must learn to get along · CNBC

Each time I revisit this topic, I am thinking, perhaps naively, that China , Japan and South Korea , a quarter of the world economy, will soon improve their relations to rev up the rest of the region and beyond. To me, that always looked like an axiomatic proposition that should easily transcend old enmities.

But delegations upon business delegations, millions of tourists and students, and South Korea's popular TV shows, music hits, barbecue delights and beauty products still seem incapable of relieving tensions bedeviling these three economic powerhouses.

Japan's business with China and South Korea is plummeting at the time when Tokyo seems at a loss for magic potions to leave behind its decades-long economic stagnation.

And that's part of my perplexity, because the Prime Minister Shinzo Abe sounded like the man who knew exactly what he had to do to move on when he took power at the end of 2012. He said then that "China was essential for the growth of the Japanese economy," and that relations with China had to be improved.

Falling exports and weak investments

But the mutual acrimony only got worse. Last Tuesday (August 2), for example, Japan's defense white paper devoted 30 pages to highlight "China's military threat." Predictably, China indignantly rejected the accusation, claiming that this was just a convenient excuse to justify changes to Japan's pacifist constitution and to remilitarize the country.

All the business pleadings have come to naught. Japanese exports to China fell at an annual rate of 9 percent in the first half of this year, tracing out a sharply declining trend of Japanese sales to China since Mr. Abe's emphatic pledge three-and-a-half years ago.

Japanese direct investments to China are also falling. They declined 20 percent over the last three years, and the numbers for the first quarter of this year are showing no sign of any significant improvement in the months ahead.

China apparently can live with that, but Japan is finding it hard to get substitutes for its flailing export and investment business with the big neighbor. And that is a considerable difficulty at a time when Japan's economy showed virtually no growth in the first quarter and overseas sales – accounting for nearly one-fifth of GDP – declined 2.5 percent.

Weakening exports are a big setback for Japan's traditional business cycle recovery, because, typically, a sustained increase in overseas sales is necessary to set in train business investments, rising employment, personal incomes and household spending. That scenario is now impossible with declining exports and a weak (2 percent) growth of business capital outlays over the last two years.