(2)The ATT aims to establish the highest possible common international standards for regulating or improving the regulation of the legal trade in conventional arms and to prevent and eradicate the illicit trade in conventional arms and prevent their diversion. Key challenges are its effective implementation by States Parties and its universalisation, bearing in mind that regulating the international arms trade is by definition a global endeavour. To contribute to addressing those challenges, the Council adopted Decision 2013/768/CFSPnote, thereby enlarging the export-control-related assistance portfolio of the Union with activities specific to the ATT. That Decision was followed by Council Decisions (CFSP) 2017/915note and (CFSP) 2021/2309note on Union outreach activities in support of the implementation of the ATT.