The conflicts between the EU and the rest of the world concerning the inclusion of international aviation in the emissions trading scheme （ETS） of the European Union （EU） have entered a new stage since 2013. The decision adopted by the EU in April 2013 provides that it will take no action against emissions from all flights arriving at and departing from EU aerodromes during 2012-2013. Historically，the first roadmap for developing a global market-based measure （MBM） for international aviation was drawn at the 38th Assembly of the International Civil Aviation Organization，which was welcomed by the EU at that time. However，the following proposal of the European Commission triggered a new round of debates in this regard，since it insisted on introducing the “airspace model” to include the emissions from international aviation within the EU airspace in the EU-ETS. No matter what kind of amendments the EU will make in the future，its actions in 2013 show clearly the new trends of the EU-ETS on international aviation. Since it appears that the EU has no willingness to terminate its ETS on international aviation at this moment，maybe the most realistic option for the EU is to extend its policy of “stopping the clock” until a global MBM agreement is applied.