Cafodd Cymru ei chadarnhau unwaith eto fel Aelod Grŵp Llywio Cynghrair o Dan2 dros Ewrop, y gynghrair o lywodraethau is-genedlaethol sy’n bwriadu gostwng allyriadau nwyon tŷ gwydr. Mae’r gynghrair yn cynnwys cynrychiolaeth o 43 o wledydd  gyda chynnyrch domestig gros o bron i $30 triliwn.
Wales was again confirmed as a Steering Group Member of the Under2 Coalition for Europe, the coalition of sub-national governments which aims to reduce greenhouse gas emissions. The coalition has representation from 43 countries with a collective GDP of nearly $30 trillion.