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Andrei Illarionov, former chief economic advisor to Russian President Putin, outlines the "bad signs" that are hampering the achievement of a ceasefire in Ukraine.
Roman Popadiuk, former U.S. ambassador to Ukraine, discusses news that leaders of Russia, France, Germany and Ukraine are meeting to negotiate a ceasefire in eastern Ukraine.
While seeking authorization for the use of force against ISIS, Obama stressed he was not asking for another ground war in the region.
Could Greece look to Russia if its debt negotiations fall through with European leaders? Harris Georgiades, Cyprus' finance minister weighs in.
Leaders are converging in Belarus to discuss the Ukraine crisis. Martina Bozadzhieva, head of research for EMEA at Frontier Strategy Group, says there's a sense of urgency within Europe to find a solution, however the crisis could drag out for longer.
U.S. President Barack Obama sent Congress his text for an authorization to use military force in the campaign against Islamic State.
Pavlo Sultansky, Ukrainian Ambassador to Singapore, attributes unrest in Ukraine to Russia's attempt of finding an external enemy so as to "postpone the collapse of the country."
At the G-20 get-together, Russian Finance Minister Anton Siluanov tells CNBC that Moscow has received no request from Greece for aid as yet.
Kiev authorities announce national guard has launched an offensive against pro-Russian separatists near Mariupol.
As Russian president Vladimir Putin heads to Egypt, Chris Weafer, senior partner at Macro-Advisory says Putin's aim is to show everyone else that Russia is still relevant and a player in geopolitics.
Anders Aslund, senior fellow at Peterson Institute for International Economics, discusses comments by U.S. Treasury Secretary Jacob Lew that Western sanctions are working to resolve Ukraine's crisis.
President Obama and German Chancellor Angela Merkel reaffirm sanctions until Moscow complies with international law.
European equities closed lower Monday as negotiations over Greece's bailout program continue and the crisis in Ukraine escalates without a peace deal in sight.
Angela Merkel, chancellor of Germany, is heading to the U.S to discuss the Ukraine crisis. Tony Fratto, managing director at Hamilton Place Strategies, weighs in on whether there'll be any progress.
Philip Hammond, UK's foreign secretary, says every country has a role to play in the Ukraine crisis. CNBC's Hadley Gamble reports the latest.
EU foreign ministers give their response to the Ukraine Crisis. Philip Hammond, UK's foreign minister says the UK does not intend on supplying lethal weaponry to Ukraine. CNBC's Hadley Gamble reports.
Uwe Parpart, managing director & head of Research at Reorient Financial Markets, says the threat of an escalation in Russia-Ukraine tensions will weigh on European stocks this week.
Germany's leader said ending arms to help Ukraine fight pro-Russian separatists would not solve the crisis, drawing rebukes from U.S. politicians.
Angela Merkel and François Hollande are in Russia to discuss a ceasefire. Joseph Dayan, head of markets at BCS Financial Group, weighs in on whether it will successful.
Efforts to establish a peace deal between Russia and Ukraine after weeks of heightened violence are to be stepped up a gear Friday.