In brief Following the US administration’s extensive new import tariffs, many companies are grappling with increased costs and supply chain uncertainty. What happens when a deal becomes financially unsustainable due to government-imposed trade restrictions? Companies should consider the force majeure and change management clauses in their contracts, and the doctrines of impossibility, impracticability and frustration of purpose under applicable statutes and the common law, to assess whether they are entitled to relief. This article examines these…