President Trump’s post raises technical questions about how and if the United States could “immediately” return to nuclear testing, and political considerations about the signaling behind nuclear testing and who would benefit most from a return to testing.

President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties banning the practice – but will it actually happen?

Beijing has been expanding its arsenal, and distrust between China and the United States over nuclear weapons has deepened, with little hope of an agreement.