Sure hope nobody discovers oil there. The United States might decide they need a huge dose of democracy and freedom.
Indian Ocean island is home to Sentinelese community who kill outsiders Daily Mail Online
Considering they are a stone age level people that are hostile, surrounded by modern era people with modern era weapons, maybe they aren't supposed to survive.
They basically require the rest of us to hold back in order for them to survive, not exactly a great strategy for continued existence.
And oil isn't needed for them to be exterminated. just have them massacre some random group of people flying over the island who crash land, and depending on the country of origin of the plane, the place could be bombed to BEFORE the stone age.