Tianran Xu is an Analyst for Open Nuclear Network (ONN), a programme of One Earth Future. Tianran focuses on North East Asian security and missile systems. Tianran uses photo mensuration to measure the size, range and capacity of missiles. He also analyses photos, videos and satellite imagery to understand nuclear and missile programmes.
With a background in media and journalism, Tianran is a regular contributor to Chinese and English open source and science publications. Prior to joining ONN, he worked as a journalist, editor and news assistant at both Chinese and foreign news organizations in Beijing.