Angelina Jolie -- who "hates" Barack Obama, sources have told Us -- gives the President and his administration a stern talking-to in an OpEd published Thursday.

In "Justice Delayed is Not Justice Denied," the actress and U.N. goodwill ambassador writes passionately about the ongoing situation in the Darfur region of Sudan.

Where "government supported militia have left 300,000 dead and 2.7 million people internally displaced."

Jolie complains that Obama's administration "has not yet announced any serious moves" to bring corrupt Sudanese leaders to justice.

"I believe President Obama ... will do [his] best to bring peace to the region," Jolie writes, but she seriously questions his policy.

"How is the Obama administration's approach to Sudan an evolution of justice?" she writes. "In addition, when the administration says it intends to work to 'improve the lives of the people of Darfur,' I would like to know what that means, besides the obvious point that their lives could hardly get worse."

The 34 year-old actress worries that if the administration doesn't deal more forcefully with Sudanese officials, future leaders could continue to "pocket financial assistance and aid relief" and "act with impunity."

She also recommends a new report "funded by the Jolie-Pitt Foundation" that the administration and the U.N. should use to the prevent future atrocities worldwide.  Jolie adds: "On this Human Rights Day--the same day President Obama receives his Nobel Peace Prize--we must also remember those who have been deprived of their rights."

She also recommends a new report "funded by the Jolie-Pitt Foundation" that the administration and the U.N. should use to the prevent future atrocities worldwide.  Jolie adds: "On this Human Rights Day--the same day President Obama receives his Nobel Peace Prize--we must also remember those who have been deprived of their rights."