"But here in the U.S., our independent oil and gas sector, open markets and private ownership of mineral rights facilitated development. Elsewhere development will require negotiations with governments, and potentially complex regulatory processes. Existing long-term contracts, common in much of the natural gas industry outside the U.S., could be another obstacle. Extensive new networks of pipelines and infrastructure will have to be built. And many parts of the world still have ample conventional gas to develop first."