The euro-Swiss franc pair is trading at a three-year high, close to the floor the Swiss National Bank abandoned back in January 2015. Geopolitical tensions, which should ordinarily make a haven currency like the franc more popular, drove it back to such lows, market participants said. The euro-franc pair EURCHF, -0.0751% rallied to a session high of 1.1994 francs on Wednesday, its best level since January 2015, when the Swiss National Bank removed the floor of 1.20 it had set for the franc versus the shared currency, and instead allowed the pair to trade freely. It was staying around that level early Thursday. Part of the reason behind originally instituting this peg was to protect the Swiss franc from being inflated as the European Central Bank gobbled up European assets as part of its quantitative-easing program. Its removal left the franc rallying to its strongest level ever against the euro, but that was short lived, as it has slowly retraced its gains over the past three years.via