Satellite images reveal China has already constructed 3km runway on island it has formed in disputed ocean territory

• Reveals a massive construction effort on Fiery Cross Reef in Spratly Islands
• The region is claimed by Philippines, Vietnam, Malaysia, Brunei and Taiwan
• China could use runway to carry out military operations, experts have said
• Follows other images of Chinese construction in disputed South China Sea

By JAY AKBAR FOR MAILONLINE
PUBLISHED: 08:52 GMT, 17 April 2015 | UPDATED: 10:24 GMT, 17 April 2015