11se2.5white

I just purchased a 2011 Fusion se 2.5l. Went to start it today, all exterior lights and interior lights work. When I put the key to accessories and/ or to start.... nothing. No radio or gauges. Checked battery with voltage meter. Full battery. Terminals look clean as a whistle. No rust or corrosion. What could be the issue? Starter? Fuse? Ignition switch?