Philippe Legrain, former economic advisor to the president of the European Commission, says no matter what the result of the Greek referendum is, it will lead to "chaos and limbo."» Read More
Nick Nelson, head of global equity strategy at UBS, explains why he has put an underweight rating on the pharmaceutical sector.
Barnaby Martin, european credit strategist at Bank of America Merrill Lynch Global Research, says the positive effects of U.S. Federal Reserve stimulus measures will go into reverse as the central bank tightens monetary policy.
Gilles Moec, head of developed Europe economics at Bank of America Merrill Lynch, says renewed problems in Greece's economy won't be enough to stop the European Central Bank pushing ahead with further stimulus measures.
Steen Jakobsen, chief economist at Saxo Bank, says a potential U.K. exit from the European Union could be the biggest challenge to the bloc since the beginning of the single currency.
Steen Jakobsen, chief economist at Saxo Bank explains why the Chinese currency could devalue 20 percent.
Oil markets will remain oversupplied in 2015 with demand not matching supply, according to Abhishek Deshpande, oil and gas analyst at Natixis.
Former Greek Prime Minister Costas Simitis, says that successive governments have spent too much money.
The U.S. economy will underperform expectations while the euro zone will see a broader recovery with peripheral countries coming to the fore, according to Steen Jakobsen, chief economist at Saxo Bank.
The U.S. energy sector will need a bailout and oil and mining stocks will see a "massive correction" due to a low oil price, Steen Jakobsen, chief economist at Saxo Bank says.
Protests in Ferguson over the killing of Michael Brown are due to a poor economic situation in the town, Morris Reid, managing director at Mercury and Democratic Strategist, adding that middle-class white Americans feel the American Dream is dead.
Maria Pinelli, global vice chair of strategic growth markets at EY, says this year's IPO market is softer than anticipated going into the year end, but mergers and acquisitions remain strong.
European banks haven't uncovered all their issues, according to, Michael Yoshikami, founder and CEO of Destination Wealth Management, adding the shaky euro zone economy presents an uncertain future for region's lenders.
Former Greek Prime Minister Costas Simitis, says the snap elections called by current Prime Minister Antonis Samaras will create more political stability for the country's future.
As the Ukraine and IMF begin fresh talks over a $17 billion aid package, a central bank official told CNBC that he hopes more aid can revive the economy.
Greece's stock market crashed on Tuesday and bond yields spiked after the country's government announced a snap presidential vote.
Stuart Oakley, global head of emerging markets FX trading and head of macro trading for EMEA at Nomura, says the People's Bank of China will not depreciate the currency as an easing measure.
John Strickland, director of JLS Consulting, says that because of airline hedging policies, the cheaper oil price will not filter through to passengers.
European shares opened sharply lower on Tuesday, tracking declines in global markets as oil prices continued to fall.
Jonathan Bell, chief investment officer at Stanhope Capital, says the slowdown in Chinese economic growth will be a "painful" but necessary adjustment.
The announcement of a Greek presidential election is a "good event" as people are fed up with austerity policies, left-wing Syriza lawmaker John Milios says.
Geoff Cutmore is co-anchor for CNBC’s flagship programme Squawk Box in EMEA; the three-hour show bookends the opening of European equity markets.
Based in London, Tso co-anchors CNBC flagship show in EMEA, Squawk Box, a show that sets the news agenda every trading day.
Stephen Sedgwick co-anchors CNBC's flagship program Squawk Box Europe and is also CNBC's OPEC reporter covering major meetings.