Paraguayan honour guards carry a wreath during a ceremony to pay tribute to war veterans of the Chaco War at the Heroes Pantheon in Asuncion June 12, 2013. Paraguay's President Federico Franco commemorated the 78th anniversary of the signing of the peace treaty that ended the Chaco War between Paraguay and Bolivia from 1932 to 1935. REUTERS/Jorge Adorno (PARAGUAY - Tags: POLITICS MILITARY CONFLICT ANNIVERSARY)