Thailand is definitely not an island. Borders with Myanmar, Laos, Cambodia and Malaysia. And significant population at 69 million. Yet it is "winning" (according to https://www.endcoronavirus.org/countries), with single digit daily confirmed cases for a couple of weeks and zero new cases several days this past week. This despite having huge mainland Chinese tourist traffic before the lockdown and first confirmed case on January 13. And despite often chaotic implementation of ubiquitous masks, border closures, business closures, travel restrictions, quarantines, tracing, social distancing - all the recommended things were not done perfectly but were done quickly.