Putting 75 years of resentment behind them, the leaders of the United States and Japan are coming together at Pearl Harbour for a historic pilgrimage to the site where the bloodshed of surprise attacks thrust America into World War II.

Prime Minister Shinzo Abe's visit with President Barack Obama is powerful proof that the former enemies have transcended the recriminatory impulses that weighed down relations after the war, Japan's government has said. Although Japanese leaders have visited Pearl Harbour before, Abe will be the first to visit the memorial that now rests on the hallowed waters above the sunken USS Arizona.

For Obama, it's likely the last time he will meet with a foreign leader as president, White House aides said. It's a bookend of sorts for the president, who nearly eight years ago invited Abe's predecessor to be the first leader that Obama hosted at the White House.

For Abe, it's an act of symbolic reciprocity, coming six months after Obama became the first sitting U.S. president to visit Hiroshima in Japan, where the U.S. dropped an atomic bomb in hopes of ending the war.

"This visit, and the president's visit to Hiroshima earlier this year, would not have been possible eight years ago," said Daniel Kritenbrink, Obama's top Asia adviser in the White House. "That we are here today is the result of years of efforts at all levels of our government and societies, which has allowed us to jointly and directly deal with even the most sensitive aspects of our shared history."

More than 2,300 Americans died on Dec. 7, 1941, when more than 300 Japanese fighter planes and bombers attacked. More than 1,000 others were wounded. In the ensuing years, the U.S. incarcerated roughly 120,000 Japanese-Americans in internment camps before dropping atomic bombs in 1945 that killed some 140,000 people in Hiroshima and 70,000 in Nagasaki.

Abe will not apologize for Pearl Harbour, his government has said. Nor did Obama apologize at Hiroshima in May, a visit that he and Abe used to emphasize their elusive aspirations for a nuclear-free future.

No apology needed, said 96-year-old Alfred Rodrigues, a U.S. Navy veteran who survived what President Franklin D. Roosevelt called a "date which will live in infamy."

"War is war," Rodrigues said as he looked at old photos of his military service. "They were doing what they were supposed to do, and we were doing what we were supposed to do."

After a formal meeting in the morning, Obama and Abe planned to lay a wreath aboard the USS Arizona Memorial, which is accessible only by boat. Then they'll go to nearby Joint Base Pearl Harbour-Hickam, where both leaders will speak.

Obama and Abe signed off on the visit last month when they met in Peru on the sidelines of an economic summit. Though the parallels with Obama's Hiroshima visit are palpable, both governments said that one visit wasn't contingent on the other.

Meanwhile, China criticized Abe's visit as an insincere attempt to absolve Japan of its wartime aggression.

"Trying to liquidate the history of World War II by paying a visit to Pearl Harbour and consoling the dead is just wishful thinking on Japan's part," said Hua Chunying,a Chinese foreign ministry spokeswoman in Beijing, at a regular briefing.

"Japan can never turn this page over without reconciliation from China and other victimized countries in Asia," she said. "Japanese leaders should stop being so evasive and dodging, and instead take a responsible attitude toward history and future, deeply and sincerely reflect upon the history of aggressive war, and draw a clear break with the past."

Abe's visit is not without political risk given the Japanese people's long, emotional reckoning with their nation's aggression in the war. Though the history books have largely deemed Pearl Harbour a surprise attack, Japan's government insisted as recently as this month that it had intended to give the U.S. prior notice that it was declaring war and failed only because of "bureaucratic bungling."

"There's this sense of guilt, if you like, among Japanese, this 'Pearl Harbour syndrome,' that we did something very unfair," said Tamaki Tsukada, a minister in the Embassy of Japan in Washington. "I think the prime minister's visit will in a sense absolve that kind of complex that Japanese people have."

Since the war, the U.S. and Japan have built a powerful alliance that both sides say has grown stronger during Obama's tenure. There are questions about what the relationship will look like under President-elect Donald Trump.

During the campaign, Trump suggested that Japan and South Korea should obtain nuclear weapons so the U.S. would no longer be burdened with costs of defending them, a disquieting notion in many Asian capitals. But after Trump's election, Abe became the first foreign leader to meet with him, sitting down in Trump Tower with the business mogul and Trump's daughter, Ivanka.

Though no Japanese prime minister has visited the USS Arizona Memorial, former Japanese leader leader Shigeru Yoshida visited Pearl Harbour in 1951, six years after Japan surrendered. He stopped there on his way home from signing the San Francisco peace treaty with the U.S. and others, and paid a courtesy visit to the office of Adm. Arthur W.R. Radford.