" Protectionism, such as what U.S. president Donald Trump was attempting, amounts in effect under these circumstances (that is, in the absence of any significant expansion of state expenditure financed either by a fiscal deficit or by taxes on capitalists) to an export of unemployment to other countries. It can work only if the other countries do not retaliate.

If they do, then it gives rise to a competitive “beggar-thy-neighbor” policy that only worsens the crisis by creating further uncertainties and reducing investments further. "

― Utsa Patnaik , Capital and Imperialism: Theory, History, and the Present