To whom is isolationism attributed?

Answer 1

USA is doing this with e.g. Kuba and North Korea. They try to cause economic problems by worldwide trade embargos in order to crash the victims and making socialism looking bad.

Note, what they never say: The Cuban Embargo is not only related to US-trade with Cuba. They stop ANY INTERNATIONAL SHIP to in US ports when they did have brung or took goods from Kuba within a given range of years!

When you consider the long routes to Cuba and the much lager tarde volume of USA, you can immagine what this means in practice.