Hague and Jolie released the proposed protocol Wednesday during a four-day London summit designed to focus world attention on the problem.
The lengthy document specifies how sexual violence in conflict zones should be investigated and prosecuted.
"This protocol is the first of its kind and we hope it will play a vital role in shattering the culture of impunity," Hague said.
Hague and Jolie called for governments around the world to publicly support the changes outlined in the document.
Jolie said the goal is to make it possible to obtain justice even in fragile countries.
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