international

National policies like sugar taxes are vital, but having international coordination is also important in such a sprawling supply chain.

The impetus behind tariffs is often to level the economic playing field, such as to avoid letting China subsidize production to create monopolies, said Usha Haley, professor of international business at Wichita State University.

"But we're fighting a war against a vicious enemy and we must have the right to use everything we need within the realm of international law to defend ourselves," he said.

"It adequately reflects the strong condemnation by the international community for the crimes committed by him and acknowledges the significant harm and suffering caused to the victims," she added.

The deal was done for the Sporting manager on 1 November but his Portuguese club wanted him to wait until the international break before moving.