OBS_VALUE: <ul><li><a href=https://www.caas.gov.sg/who-we-are/areas-of-responsibility/growing-singapore-as-a-global-air-hub/air-services-policy target=_blank>Liberal aviation policy - Civil Aviation Authority</a></li><li><a href=https://www.mot.gov.sg/what-we-do/aviation/open-skies target=_blank>Open Skies - Ministry of Transport Singapore</a></li><li><a href=http://www.maliat.govt.nz/ target=_blank>Multilateral Agreement on the Liberalization of International Air Transportation (MALIAT)</a></li></ul>