Antitrust reviews of international deals are increasingly prolonged, resulting in increased costs for the combining parties, as long waits between deal signing and closing may introduce the risk of changes to the parties’ business or financial conditions, increase the difficulty of obtaining financing commitments, and distract management from day-to-day operations. In this publication, John Harkrider and Michael O’Mara discuss how merging parties must understand how long it takes for jurisdictions to review a transaction so they can factor it into their transaction and financing agreements.