Prime Minister Shinzo Abe surged back to power seven years ago, pledging to bolster the nation¡¯s defenses in response to a growing threat from China and aiming to amend the pacifist Constitution.

Now on track to become Âé¶¹´«Ã½ longest serving prime minister, Abe has kept his first promise. But the second remains elusive.

That means Japan, which U.S. President Donald Trump has criticized over what he called an ¡°unfair¡± security alliance, still faces limits on acting as a full-fledged American ally.