have substantiated
-he confirmado
Present perfect conjugation of substantiate. There are other translations for this conjugation.

substantiate

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However, we have substantiated the fact that Iraq was fighting severe cancers that were caused by Depleted Uranium munitions in 1991, and that the United Nations did debate this issue.
De todas maneras hemos justificado el hecho de que Irak estuvo combatiendo severos cánceres causados por las municiones de Uranio Empobrecido del 1991, y que las Naciones Unidas debatieron el tema.
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