Gotabaya Rajapaksa
He has previously served as Secretary to the Ministry of Defence and Urban Development from 2005 to 2015 under the administration of his elder brother former President Mahinda Rajapaksa , leading the Sri Lankan Armed Forces to the military defeat of the Tamil tigers , which ended the Sri Lankan Civil War . 
<triplet> Tamil tigers <subj> Sri Lankan Civil War <obj> conflict <triplet> Sri Lankan Civil War <subj> Tamil tigers <obj> participant