The Obama administration is laying the groundwork for possible retaliation in response to a European law requiring airlines to pay for carbon emissions.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/us-weighs-retaliation-over-europe-aviation-law
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/reuters
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/european-union-eu
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-transport
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/emissions-trading
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/argentina
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-offset
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-pricing
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china