• T. Boone Pickens, BP Capital founder, talks about the nation's energy boom and sounds off on Russia's attempt to profit from Ukraine's natural resources.

  • NBC's Jim Maceda reports Ukraine launches its national guard ahead, as Yanukovych declares he remains Ukraine's president and commander-in-chief.

  • UPDATE 3-Oil rises, spurred by fresh Ukraine tensions Tuesday, 11 Mar 2014 | 6:40 AM ET

    *France says sanctions on Russia could come this week. LONDON, March 11- Brent oil futures rose above $108.50 a barrel on Tuesday, supported by building tensions in the Ukraine crisis as the West threatened sanctions against Russia as early as this week.

  • Wartime ghosts haunt Ukraine as crisis deepens Tuesday, 11 Mar 2014 | 6:30 AM ET

    KIEV, March 11- Seven decades after the end of World War Two, the ghosts of that conflict are being evoked in an ideological as well as geopolitical battle over the future of Ukraine. This has changed during three months of crisis in Ukraine and as it tries to hold on to the Crimea region, where power now lies in the hands of Russian separatists and Russian forces.

  • Yanukovych: I remain Ukraine's president     Tuesday, 11 Mar 2014 | 6:12 AM ET

    CNBC's Jim Maceda reports ousted Ukrainian President Viktor Yanukovych insists he is still the legitimate leader of the Ukraine.

  • WASHINGTON, March 10- The United States held out the possibility on Monday that the U.S. and Russian foreign ministers could meet this week about Ukraine but said it needed to know Moscow would engage seriously on a diplomatic solution.

  • SEVASTOPOL/ KIEV, March 10- A pro-Russian force opened fire in seizing a Ukrainian military base in Crimea on Monday and NATO announced reconnaissance flights along its eastern frontiers as confrontation around the Black Sea peninsula showed no sign of easing.

  • US LNG permits moving way too slow: Pro     Monday, 10 Mar 2014 | 7:19 PM ET

    Why LNG exports make sense, and why the government needs to speed up approvals, with Michael S. Smith, Freeport LNG Chairman & CEO, and Daniel Yergin, IHS Vice Chairman.

  • 'Crimea is lost': Nomura     Monday, 10 Mar 2014 | 7:16 PM ET

    Alastair Newton, Senior Political Analyst at Nomura, explains why he thinks Ukraine and its Western allies have lost hold of Crimea, as the latter prepares for a referendum to join Russia on Sunday.

  • Russia vs Ukraine: 'No contest' if fighting starts Monday, 10 Mar 2014 | 3:45 PM ET
    Russian armored personnel carriers reported to be heading to Simferopol of Crimea, Ukraine.

    When it comes to the conflict over Crimea, Ukraine has few if any military options.

  • *EU officials preparing ground for further Russia sanctions. BRUSSELS, March 10- The European Union is preparing to impose travel bans, asset freezes and other restrictions on Russia for its failure to "de-escalate" the crisis in Crimea, officials said on Monday.

  • Watch Art Cashin: Factors pushing stocks lower Monday, 10 Mar 2014 | 2:30 PM ET

    Art Cashin of UBS Financial Services discusses why the U.S. stock market was under pressure Monday.

  • BRUSSELS, March 10- In its effort to show Russia it means business over Ukraine, the European Union may have created extra problems for itself in committing to a quick political deal with Kiev while leaving closer economic ties for later.

  • FRANKFURT/ BRUSSELS, March 10- Brussels dealt a blow on Monday to two major Russian pipeline projects to supply natural gas to Europe, in the latest sign of strains in the energy links between Moscow and the European Union. Russia's seizure of Ukraine's Crimea region has already shaken political relations between Russia and the European Union.

  • Russia vs Ukraine: No contest     Monday, 10 Mar 2014 | 1:30 PM ET

    CNBC's Michelle Caruso-Cabrera reports that despite intense diplomatic discussions, Russia continues to infiltrate Crimea. Peter Felstead, Jane's Defence, breaks down the size differential and defense budgets of the Russian and Ukrainian militaries.

  • Crimean referendum 'illegal': UK's Cameron     Monday, 10 Mar 2014 | 12:32 PM ET

    U.K. prime minister, David Cameron, says should it go forward, the Crimean referendum would be viewed as illegal and that there would be consequences for Russia if it continued to intervene.

  • RIO DE JANEIRO/ LONDON, March 10- Emerging stocks fell over 1 percent on Monday after poor Chinese export data re-ignited global concerns of a slowdown in the world's No. 2 economy and pushed Chinese shares to a five-year closing low.

  • UPDATE 1-EU puts Russia gas pipeline talks on hold Monday, 10 Mar 2014 | 11:15 AM ET

    FRANKFURT/ BRUSSELS, March 10- Political talks between EU officials and Russia on its South Stream gas pipeline to bypass Ukraine are on hold, while Gazprom's access to another vital link has stalled for technical reasons, the European Commission said on Monday.

  • NEW YORK, March 10- U.S. stocks were set to open slightly lower on Monday, on the heels of a record high for the S&P 500, following unexpectedly weak data in China which tempered enthusiasm over the strength of the global economy.

  • Crimea now Putin's 'red line'     Monday, 10 Mar 2014 | 8:03 AM ET

    Protests continued over the weekend in Crimea and Ukraine, reports NBC's Jim Maceda, even as Russia appears to step even further onto Ukraine's doorstep.