You didn't pay attention to the show. He wasn't actually keeping Japan safe. In fact, everything he did actually put Japan MORE in danger. SONG were the only things actually protecting Japan, not him, shown when he fired them all, then turned around and rehired them when he realized he had no idea what the hell he was doing. Nothing you say actually justifies what he did. His obsession with being the one to protect Japan was completely irrational, and based on nothing, and he didn't even protect Japan in the end, he actively endangered it.