The US dollar index closed higher for a fifth consecutive month last Friday, its longest such stretch since March 2013, even as the European single currency managed to eke out a small weekly gain.
Weakness in oil-related currencies sent the spot dollar index 0.6% higher to 1,106.90, with the euro/dollar off by 0.16% on the day, to 1.2440, and cable left hanging near one-year lows, at 1.5638.
The Russian rouble was particularly hard hit. Traders sent it 3.6% lower to 50.4085 against the US currency unit, a new all-time low.
The country stands to lose as much as $140bn a year as a consequence of the decline in oil prices, Finance Minister Anton Siluanov said last week.
Consumer nations on the other hand stand to garner a one-off windfall, which will act as a mini-stimulus package, as European Central Bank president Jens Weidmann pointed out.
The Japanese yen also slid, by 0.68% to reach 118.66. The Yen may fall as far as 130 per US dollar, Mizuho Bank said in a report e-mailed to clients.