„Beggar-Thy-Neighbor Policy“

A course of action through which a country tries to reduce unemployment and increase domestic output by raising tariffs and instituting non-tariff barriers that impede imports, and thus improve its own position at the expense of its trading partners.

Source:

Krugman, P., Obstfeld, M., & Melitz, M. (2015). International Economics: Theory & Policy. 10th edition. Pearson Education Limited.