For global markets, the threat of escalated conflict in Ukraine poses greater risks than U.S. airstrikes in Iraq, says David Riedel, President & Founder at Riedel Research Group.
Ilya Spivak, Currency Strategist at FXCM, says Russia's retaliatory sanctions may boost inflation in Europe which can discourage the central bank from more easing.
Major oil producers are pulling staff from Iraq's Kurdistan region as the radical militants of the Islamic State advance towards its capital.
Uwe Parpart, Managing Director and Head of Research at Reorient Financial Markets, says the threat of escalated conflict in Ukraine make European markets too risky.
Jeff Mankoff, Fellow and Deputy Director at the Center for Strategic and International Studies' Russia and Eurasia Program, discusses the consequences if Russia launches an invasion of Ukraine.
President Obama discusses the fighting between Hamas and Israel, and the ceasefire there. He says no country would tolerate rockets being launched into its cities.
President Obama discusses U.S. aid to Ukraine and its military.
NATO is reporting Russian troops are gathering at the Ukraine border. Discussing how much a potential invasion by Putin into Ukraine would cost the U.S. markets, with Larry McDonald, Newedge.
The Netherlands' prime minister has called a halt to the search for remains of victims of the Malaysia Airlines Flight 17 disaster in Ukraine.
Putin earlier signed an order banning or limiting imports of agricultural products from countries which have imposed sanctions on Russia.
Col. Jack Jacobs, MSNBC military analyst and Medal of Honor recipient, discusses the possibility of Vladimir Putin sending official Russian forces into Ukraine.
European shares closed lower on Wednesday, with investors reacting to disappointing data and escalating tensions between Russia and Ukraine.
As concerns over Russia and Ukraine weigh on investors, CNBC's Jim Cramer explains why it is Russia, not inversions, that will drive the market lower.
Adrian Di Pasquale, Political Analyst at Internuntia Group, says Ukrainian forces are steadily regaining control and that's making Russia nervous.
Christian Whiton, Principal at DC International Advisory, says the military buildup near Ukraine is just a "distraction" and insist that further Russian aggression is unlikely.
Sandy Lincoln, Chief Markets Strategist at BMO Global Asset Management, says the latest selloff won't last as strong fundamentals in the market will eventually trump geopolitical fears.
If the situation in eastern Ukraine escalates, the correction on Wall Street may worsen, says Jack Bouroudjian, Chief Investment Officer of Index Financial Partners.
Oil traders are focused on fundamentals, reports CNBC's Bertha Coombs.
Ongoing tensions between Russia and Ukraine have shifted opportunities for investors, Franklin Templeton's Katrina Dudley says.
Traders are citing uncertainty surrounding Ukraine and Russia as stocks drop sharply in the early afternoon. Mag Black-Scott, Beverly Hills Wealth Management, and Mark Tepper, Strategic Wealth Partners, provide perspective.