IPA Observer 4 – 2015 Downloads Outward investment agencies: Partners in promoting sustainable development. IPA Observer no. 4 – 2015 (UNCTAD/WEB/DIAE/PCB/2015/4) 4 Jan 2016 English Sign up for our Insights newsletter. Get trusted intelligence on global trade, the economy and development in your inbox. Subscribe RelatedTopicInvestmentProgramInvestment Promotion and FacilitationSeriesInvestment Promotion Agency Observer KeywordsInvestment promotion