[cf141q5325]

Its in the article

>China's proposal, meanwhile, appears to suggest converting solar energy into electric energy in space, before beaming back to Earth using a microwave or laser and feeding into the grid via a ground receiving system.

[AstralStorm]

Short version: they can fry a target in any country in about a day.

[FerretFred]

If the country is small enough they can fry that too. I can think of a likely candidate already.