But Ms. Aung San Suu Kyi has defended Myanmar’s security forces, saying that there should be an investigation into what caused the Rohingya crisis. “We want to find out why this exodus is happening,” she said in a speech in September.
Given the widespread testimony from Rohingya refugees about what led them to flee, critics have accused the Nobel laureate of disingenuousness.
At the news conference on Wednesday, Ms. Aung San Suu Kyi defended her statements, saying, “I don’t know why people say I’ve been silent” about the Rohingya, and suggesting that perhaps what she has said was not “interesting enough” or “incendiary.” She thanked Mr. Tillerson for having “an open mind, which is very rare these days.”
Last month, Ms. Aung San Suu Kyi — who as a civilian leader has no authority over Myanmar’s powerful military, which ruled for nearly half a century — set up yet another commission dedicated to the Rohingya emergency. There are now at least five such panels, and Ms. Aung San Suu Kyi presides over most of them.
Yet members of her government admit they have not sent any investigators to Bangladesh to listen to the Rohingya’s accounts. Human rights groups fear that, at a minimum, hundreds of Rohingya civilians have been killed. But with international investigators prevented from freely accessing northern Rakhine, evidence is scarce.
Myanmar’s minister for social welfare, Dr. Win Myat Aye, who is involved in four of the government’s Rohingya commissions, said on Wednesday that he was wary of accusing the military of any atrocities.
“We always used to hear that the military was violating human rights,” said the veteran member of the National League for Democracy, whose leaders were jailed and persecuted by the military for decades before they entered a power-sharing government with the army last year. “But we don’t know if these allegations in Rakhine are true or not because I haven’t seen it myself and it’s beyond my capacity.”
On Monday, the Myanmar military released the results of a monthlong internal investigation that cleared the army of any abuses against Rohingya civilians. Instead, the Tatmadaw, as the Myanmar armed forces are known, blamed Rohingya “terrorists” for violence in Rakhine.
The latest military operation, like an earlier campaign last year, began after Rohingya insurgents attacked security outposts in Rakhine, killing Myanmar forces.
The Tatmadaw’s internal report maintained that soldiers had not targeted any fleeing women or children, a claim disputed by refugees now sheltering in Bangladesh. The inquiry also said that when shooting suspected insurgents, Myanmar forces made sure to only aim below their knees.
Efforts by the United Nations to scrutinize that first wave of violence last year have been foiled by the Myanmar authorities, who have denied United Nations investigators visas to enter the country.
With many of the Rohingya still making the perilous journey to Bangladesh, rights groups fear that there will soon be barely any left in Myanmar, apart from the 120,000 who have been forced into internment camps in central Rakhine.
On Monday, the spokesman for Prime Minister Theresa May of Britain said that the campaign against the Rohingya had been “created by the Burmese military and it looks like ethnic cleansing.”
On Wednesday, the United States Holocaust Memorial Museum, in conjunction with Fortify Rights, a human rights watchdog, released a report with allegations of “mounting evidence” of genocide against the Rohingya.
“The Rohingya have suffered attacks and systematic violations for decades,” said Cameron Hudson, director of the Simon-Skjodt Center for the Prevention of Genocide at the United States Holocaust Memorial Museum. “The international community must not fail them now when their very existence in Myanmar is threatened.”
Members of Congress have proposed imposing sanctions on those in Myanmar who have orchestrated the military crusade against the Rohingya. Earlier sanctions were lifted as the military-dominated regime began transferring some power to Ms. Aung San Suu Kyi’s party.
On Monday, leaders who had gathered for an Asia-Pacific summit meeting in Manila, including President Trump, declined to issue a forceful condemnation of Myanmar for its treatment of the Rohingya.
Human-rights groups have urged Myanmar to end decades of systematic persecution of the Rohingya and to give them citizenship. Although members of the Muslim minority have lived in Rakhine for generations, the official stance in Naypyidaw is that they are illegal immigrants from Bangladesh.
Last month, the United Nations, which has been accused by Myanmar officials of supporting Rohingya militants, was told that it would be allowed to resume humanitarian assistance to desperate and hungry communities trapped in northern Rakhine. But only a trickle of aid has been allowed in so far.
Meanwhile, Ms. Aung San Suu Kyi’s various Rohingya commissions are continuing their work.
“We are trying our best to find a solution,” said Dr. Win Myat Aye, the social affairs minister. “But so far, there is still no way to solve the problem.”