In her first address since the army crackdown on insurgents in northwestern Rakhine causing over 400,000 Rohingyas flee, she condemned all human rights violations and said anyone responsible would face the law.
Amnesty International said Suu Kyi and her government are “still burying their heads in the sand over the horrors unfolding in Rakhine State”.
"At times, her speech amounted to little more than a mix of untruths and victim blaming," said Amnesty’s Regional Director James Gomez.
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“There is overwhelming evidence that security forces are engaged in a campaign of ethnic cleansing through murder and forced displacement.”
"While it was positive to hear Aung San Suu Kyi condemn human rights violations in Rakhine state, she is still silent about the role of the security forces in this," said Gomez, who is in charge of Southeast Asia and the Pacific.
The United Nations has branded the military campaign in Rakhine ethnic cleansing. Suu Kyi, however, did not address that but said her government was committed to the rule of law.
Suu Kyi claimed that there have been no clearance operation since Sept 5, but pictures taken after that from the Bangladesh side showed burning houses on the Myanmar side.
UNICEF Deputy Representative in Myanmar Paul Edwards, however, said her statement has to be taken at 'face value'.
"But of course none of us really know what's happening there if we're not there," he added.
The Rakhine state government praised Suu Kyi's "transparency", but her pledge to promote harmony between Rohingya Muslims and Buddhist Rakhine was not assuring.
"The situation is ready to explode. It just needs a single spark," said Rakhine government's Secretary Tin Maung Swe.
Suu Kyi is also facing a barrage of criticism from the international media.
The New York Times described her speech as "remarkable parroting of the language of the generals”.
"But those who expected Ms Aung San Suu Kyi to deliver an eloquent requiem for an oppressed people were disappointed," reads its report.