The Swiss franc continued to show volatility as the country's central bank signaled that it had not given up intervening in currency markets.
The euro rose against the dollar before a meeting of the U.S. Federal Reserve that may push back expectations for an interest rate rise.
The euro regained a foothold in early deals in London, investors choosing to take some profit on two days of steep losses.
The price of the Russian ruble fell sharply against the U.S. dollar Monday after fighting increased in the eastern part of Ukraine.
The euro fell to fresh 11-year lows against the dollar after the ECB said on Thursday it would pump a trillion euros into the euro zone economy.
The euro hit a fresh 11-year low after Draghi announced the launch of an open-ended expanded monthly 60 billion euro bond-buying program.
The currency war is being played like a chess match, but that will eventually change, veteran trader Art Cashin told CNBC.
The yen rebounded against the dollar after the Bank of Japan stood pat on monetary policy.
The dollar hit a one-week high against the yen after China growth data was not as bad as many had feared, curbing demand for the safe-haven Japanese currency.
The European Central Bank could take its boldest steps yet to revive the euro zone's moribund economy.
New Zealand's Prime Minister, John Key, says structural reform is needed in the euro zone to boost the region's economy.
New Zealand's Prime Minister John Key says the low oil price is positive for consumers.
New Zealand's Prime Minister, John Key, says the Swiss National Bank's move to remove the Swiss franc's euro peg has affected the kiwi, but the country's economy remains strong.
Dennis Gartman, along with Deutsche Bank's David Bianco, talk about who is hurt by the Swiss central bank's move.
Switzerland's franc soared by almost 30 percent in value against the euro after the Swiss National Bank abandoned its three-year old cap.
Switzerland's franc soared by almost 30 percent after the Swiss National Bank abandoned its cap against the euro.
The dollar fell against the yen following after newly released data showed retail sales fell 0.9 percent, its biggest drop since January 2014.
Sterling fell towards an 18-month low against the dollar, after data showed British inflation at its lowest since 2000.
The yen hit a one-month high against the dollar on Tuesday, buoyed by steady demand for safe-haven assets against a backdrop of plunging oil prices.
Sterling recovered some ground on Friday, pushing back above $1.51 as the dollar retreated broadly.