Indonesia: Australia's Populous Northern Neighbor

Indonesia — 279M+ people (4th globally), 17,000+ islands, maritime border with Australia across the Timor and Arafura Seas. Jakarta (11M) is 5.5 hrs from Darwin; Bali 3 hrs from Perth.

Relationship: trade ($17B), defense (Lombok Treaty), education (20K+ Indonesian students in AU), diaspora (100K+ Indonesian-born in AU). Tensions: live cattle export bans, asylum boats, espionage allegations. But geography dictates engagement—Australia's only populous land neighbor.