Maria Santelli ndi membala wa Advisory Board of World BEYOND War. Iye amakhala ku United States. Maria wakhala mkulu wa bungwe la Center on Conscience & War (CCW) kuyambira mu 2011. Bungwe la CCW lili ndi zaka 75 ndipo likuyesetsa kuteteza ufulu wa anthu okana usilikali chifukwa cha zimene amakhulupirira. Asanabwere ku CCW, Maria anali wokonza mapulani ku New Mexico komwe adapanga projekiti ya Side Ina: Chowonadi mu Kulemba Usilikali, kubweretsa nkhondo ndi omenyera nkhondo ena m'kalasi kuti awulule nthano ndi zenizeni zomwe zimayambitsa malonda a olembera. Mu 2008, Maria adakhazikitsa Hotline ya New Mexico GI Rights Hotline kuti ipereke chithandizo chachindunji kwa asitikali ndikukhala wotsogolera dziko lonse pankhani za kutenga nawo mbali pankhondo ndi nkhondo, kuphatikiza kukana kulowa usilikali, nkhanza zogonana ndi usilikali, PTSD ndi Moral Injury, ndi chowonadi polemba ntchito.
