If the US economy collapses, it will drag down the rest of the global economy with it. As the epicenter of the blast, the US may be expected to suffer the worst, but the whole global economy could collapse with it. Furthermore, given the US's vast nuclear arsenal, extreme political instability in the US could have catastrophic results that could ignite WW3 and kill billions. It is obvious from this video that the man being interviewed in it is glad the US might collapse. This in turn causes me to question his impartiality on the question. A sudden US collapse would be severely against everyone's interests. A gradual US decline to more appropriate levels on the other hand may limit external damage and so is preferable to the globe. China is not a scrupulous country, and therefore I doubt it would care about America's wars. France is presently ruled by conservatives who are not against American foreign policy. Russia U.S. relations are at a high point, and Russia, not to mention France, supports the US in Afghanistan. The Middle Eastern regimes bask in and rely on our support. I think the real motivations behind potentially promoting a currency shift in the above nations are of self-interest and of acknowledgment that the problem is accumulating and will inevitably burst. It is not something so idealistic as promoting peace, except perhaps, paradoxically, for Iran. This currency shift likely has to happen, as US likely won't reform until it faces the consequences of its actions, and so the question asked is how can it be made to happen in the least harmful way for your nation? The shift may not happen in 9 years, as the vaunted British article may be dishonest and the unanimously denying officials may be being honest. But who can know? Be careful what you wish for.