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SNB May Use ‘Nuclear Weapon’ as Franc Resumes Euro Advance

The Swiss central bank may need to ready its “nuclear weapon” of buying euros as the franc heads for the biggest weekly advance on record against Europe’s single currency.

While the Swiss National Bank has so far avoided currency purchases in its latest bid to keep a lid on the franc, it may soon have no alternative but to follow through on its threat to intervene, economists and strategists said.