China has been buying up commodities at a rapid clip‚ prompting analysts to wonder out loud whether Beijing is preparing to choose the economic &;quot;nuclear option.&;quot; &;quot;China is preparing for something major. That seems increasingly obvious judging from the stockpiling of important resources. Could it be that they are preparing a major one-off devaluation of the CNY&;#63;&;quot; Andreas Steno Larsen‚ CEO of Steno Research‚ wrote last week. Going &;quot;nuclear&;quot; and intentionally devaluing the Chinese yuan...