Richard Anderson, Delta Air Lines CEO, explains how Delta's operations have been impacted by the possibility of Russia closing airspace.
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.
Russia and Iran have yet to agree on details of an oil-for-food deal, highlighting global pressures on both countries.
European shares closed lower on Wednesday, with investors reacting to disappointing data and escalating tensions between Russia and Ukraine.
Vladimir Putin has signed a decree to put limits on imports from countries which have imposed sanctions on Russia. CNBC's Michelle Caruso-Cabrera reports the details.
Ebola virus and conflict in the Middle East and a possible trade war with Russia could all hurt air travel this year, the IATA said.
Art Cashin, UBS director of floor operations, discusses the market rebound off lows and explains the "temporary" flight to gold.
David DeWalt, FireEye CEO, discusses the Russian crime ring that amassed the largest known collection of stolen Internet identifications. DeWalt says companies are getting breach at a rapid pace.
August is the month when, many Russians believe, things often go wrong for the country, could this August be about to repeat the pattern?
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.
CNBC's Eamon Javers has the latest results from an NBC/Wall Street Journal poll on how Americans feel about an entire array of things, including the economy, Congress, and poor approval ratings for President Obama.
More bad news for President Obama, according to a new NBC/Wall Street Journal poll, the president's approval rating hit a new low. CNBC's Eamon Javers has the latest result on how Americans feel about President Obama, Congress, and the economy.
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.
CNBC's Jim Cramer weighs in on today's market selloff. Cramer says the impact of the downing of Flight MH17 was a game changer and Putin will win.
David Nelson, Belpointe Asset Management, and Gordon Charlop Rosenblatt Securities, discuss how the convergence of Fed policy and geopolitical tension contributed to today's market selloff and if it's a buying opportunity.
CNBC's Bob Pisani examines what triggered the midday selloff.