Antitrust Chronicle®

Dear Readers,   For most of its modern history, U.S. antitrust defined itself partly by what it declined to consider. That separation is no longer holding. National security has entered...

As great-power competition between the United States and China intensifies in strategically vital sectors such as artificial intelligence and quantum computing, both countries’ antitrust regimes increasingly address national security considerations,...

In February 2026, the Department of War (“DoW”) issued guidance implementing Section 857 of the FY2024 NDAA and elevating the DoW's historically ad hoc role in defense-related M&A review to...

National security considerations are becoming increasingly important in economic policymaking. Their expanding economic scope is bringing them into more frequent contact with competition enforcement, with merger control providing a particularly...

Telecommunications networks are not ordinary hardware purchases; they are the platforms on which cloud services, artificial intelligence, energy grids, and increasingly defense communications are built, and vendor choice creates lock-in...

Europe’s defense sector is entering a period of significant investment and consolidation as governments increase defense spending, technological innovation accelerates and policymakers seek to strengthen European industrial capacity. These developments...

As foreign direct investment (“FDI”) regimes worldwide face increasing filing volumes and regulators seek to balance the role of safeguarding national security while also facilitating foreign capital inflows, many regimes...

Tariffs are typically viewed as instruments of trade policy, but they also provide valuable natural experiments for understanding competition and antitrust risk. Because tariffs impose common cost shocks on competing...

Dear Readers,   This edition of the Chronicle is devoted to computational antitrust — a term that, five years ago, still had to be defined before it could be discussed,...

In five years, computational antitrust has gone from a proposition to a field. More than eighty agencies now use computational tools, a literature has formed around them, a scattered set...

This article turns to a detection problem that computational methods are unusually well placed to solve. Where seller-side algorithmic collusion leaves public price signals that agencies can audit, AI agents...

This article examines the European Commission’s Draft Merger Guidelines, published for consultation on 30 April 2026, and their extension of merger control from specific innovation competition — rivalry around identifiable...