Currency traders have been circling exchange rates this week, with expectations high that political divisions could lead to further opportunities.
The dollar rose to a three-week high, bolstered by gains in oil and stocks as well as losses in sterling and euro.
The Economist columnist Jeremy Cliffe, shares his view on United Kingdom Prime Minister David Cameron's case to stay in the EU, the clash between Cameron and Boris Johnson, and his economic forecast for Britain.
Kathy Lien, BK Asset Management, shares her thoughts on how the possibility of a UK exit from the European Union will likely impact the euro and British pound.
CNBC's Wilfred Frost reports London Mayor Boris Johnson says he will campaign for Britain to leave the European Union. Meanwhile UK PM David Cameron has a referendum on the EU membership set for June 23rd.
CNBC's Geoff Cutmore reports London Mayor Boris Johnson will campaign for Britain to leave the European Union, while big business backs PM David Cameron's push to keep the UK in the EU. A referendum on the debate is set for June 23rd.
The yen rose against the euro and dollar on Friday after yet another downbeat session for oil prices and stock markets worldwide.
The dollar rose against most currencies, bolstered by an increase in risk appetite amid a continued recovery in oil prices.
The U.S. dollar fell below 114 yen after the Federal Reserve released the minutes from its January meeting.
The dollar rose against most major currencies on Tuesday as an agreement between the world's top oil producers increased investors' appetite for risk.
The euro and yen weakened Monday after a warning on volatile currency markets and huge gains from China's yuan helped settle financial nerves.
The dollar index rose on Friday after positive consumer spending data suggested the Fed may raise interest rates this year.
But as central bank's appear to be running out of options, their moves to weaken their currencies have become increasingly unsuccessful.
The dollar fell to a 15-month low against the yen on Thursday, on track for its worst week against the yen since 2008.
The dollar fell to a 15-month low against the yen on Wednesday as investors packed into the safe-haven Japanese yen.
The dollar tumbled to a four-month low on Tuesday as growing fears of a global slowdown pushed investors to safe-haven currencies.
The yen surged by half a percent against the dollar as worry over Europe's banks drove capital to the safety currecny.
The dollar rebounded on Friday after data showed a pickup in U.S. wages, suggesting rates hikes are more likely to happen in 2016.
The dollar was on the defensive after a collapse in hopes of a further rise in U.S. interest rates this year drove its biggest daily fall.
The yen rose on Wednesday as weaker stock markets in Europe spurred investors to buy safe haven assets.