The Achmea judgment revolutionised intra-EU investment protection by declaring intra-EU bilateral investment treaties (intra-EU BITs) incompatible with EU law. This incisive book investigates whether intra-EU foreign investments benefit from this alteration, which discontinued the parallel applicability of intra-EU BITs and EU law in the EU internal market. Analysing the level of protection offered to four identified types of investments, Dominik Moskvan argues that certain investors will find more favourable substantive protection under the framework of EU law as opposed to intra-EU BITs....