This month has seen the entry into force of lower notification thresholds in the UK for additional markets impacting national security, legislation passed in Aruba to introduce a new merger control regime and the publication of revised guidelines in France, which include an extension of the scope of the simplified procedure. UK—revised notification thresholds for additional national security sectors enter into force The lower notification thresholds in the UK for certain additional sectors impacting national security have entered into force. The lower thresholds cover transactions in sectors involving the developing, producing development, production or research into: • artificial intelligence, • cryptographic authentication, and • advanced materials. For these sectors: • the 25% share of supply threshold has been amended so that it can be met solely by the activities of the target, and • the target’s turnover threshold has been reduced to £1m (from £70m). This change follows a similar change in 2018 for other sectors impacting national security, namely (i) military or dual-use goods which are subject to export control, or (ii) quantum technology,