The ICAO standard for new aircraft was agreed in February 2016. The purpose of the standard is to see manufacturers produce aircraft with lower CO2 emissions than would have been the case without the standard. Regrettably that is not going to happen. The measure comes too late and the stringency is too weak. In addition the standard will not impact the plans of Airbus and Boeing whose aircraft combined account for over 90% of aviation emissions. A last minute addition means that both manufacturers can continue producing less fuel efficient aircraft until 2028 or even longer. Europe should call immediately for the standard to be revised or reject it outright.