rich1.0Sam (npub1yz…yfxu5)https://nostr.ae/npub1yzfm42rzr3dj2h50flpvdl0uzrv22kv2y4ghve804w5xqu6lzqcqkyfxu5njumphttps://nostr.aeI’m 4/7ths through and already would recommend it 100%. It’s a fascinating mix of history; both of cyphers/encryption/codes and real world/military events.