Such nonmilitary, yet essentially warlike activity includes the use of economic means to compel a given adversary to alter its policies or behavior or to undermine its ability to conduct normal relations with other countries.

These economic means stop short of outright and overt physical engagement or battle, but they seek remedies and have real, measurable consequences; some of those measures today take an electronic or digital form in the case of crypto war.  

Common forms of economic warfare include trade embargoes, boycotts, sanctions, tariff discrimination, the freezing of capital assets, suspension of aid, the prohibition of investment and other capital flows, and expropriation.

Trump has used all of them, and more often than past presidents; they have come to define both his own image and his very foreign strategy. READ it HERE