The US dollar weakened significantly this week, retreating from recent multi-month highs as escalating energy prices and shifting global monetary policy expectations eroded its safe-haven appeal.
According to Reuters data reported on March 20, 2026, the dollar index fell 1.1% to 99.359 its largest weekly decline since late January reflecting a broad reassessment of interest rate paths across major economies. The greenback’s slide coincided with a sharp rise in Brent crude futures, up approximately 50% since intensified US-Israel conflict with Iran disrupted Middle East energy flows.
The Federal Reserve now stands as the only major central bank not widely expected to raise rates in 2026, while counterparts adopt more hawkish stances in response to inflation risks fueled by higher energy costs.
– The European Central Bank maintained rates but flagged energy-driven inflationary pressures, with markets now pricing in a potential hike by June.
– The Bank of England held steady but indicated readiness to tighten, with around 80 basis points of increases anticipated by year-end.
– The Bank of Japan kept policy accommodative but left the door open for a rate hike as early as April, supporting yen strength.
– The Reserve Bank of Australia delivered a second consecutive rate increase, with further tightening widely expected.
Currency movements mirrored the divergence: the euro gained 1.4% to around $1.1569, the Japanese yen rose 1.2% to near 157.88, sterling climbed over 1.5% to $1.3422, and the Australian dollar advanced 1.5% to just below 71 cents.
In Nigeria, the naira depreciated to N1,362 per US dollar on Wednesday, March 18, 2026, according to Central Bank of Nigeria (CBN) data, with no trading recorded on Thursday due to the Eid al-Fitr public holiday.
The dollar’s retreat marks a reversal from earlier strength driven by expectations of relative US monetary stability. However, the rapid escalation of Middle East tensions—disrupting oil exports and pushing crude prices higher—has complicated inflation forecasts and prompted global central banks to lean toward tighter policy, diminishing the dollar’s relative attractiveness.
Market participants now anticipate continued volatility in currency markets as oil price trends, geopolitical developments, and divergent central bank signals reshape investor positioning in the weeks ahead.
