Chris Weafer, senior partner at Macro-Advisory, says the sanctions on Russia have been successful in making foreign companies wary of dealing with Russian companies and discusses the possibility of further measures.
Christopher Granville, managing director at Trusted Sources, says the politics between Russia and Ukraine are calming, but fighting continues on the ground.
Igor Sechin, CEO of Rosneft, says the company is "not perceived in the right way" and is considered to be a state-owned company.
Igor Sechin, CEO of Rosneft, says he cannot understand why there are U.S. sanctions against him, calling it a "sad situation".
The number of millionaires worldwide grew by nearly 2 million last year and the group grew nearly 14 percent richer, a study said.
With its cost-effective technology, Space X is disrupting an industry that promises to be the biggest innovation economy in human history.
Bod Dudley, CEO of BP says he's not concerned about the group's investment in Rosneft despite the situation in eastern Ukraine.
Alexander Korsik, CEO of Bashneft, says the unrest in Ukraine has had little impact on the group and that the decision to introduce a share sale either in London or Moscow will be made in "the spur of the moment".
Helge Lund, CEO of Statoil, says despite the tensions between Ukraine and Russia and concern over energy supply, European gas looks credible in the long-term.
Mikhail Shamolin, CEO of Sistema, says the cost of finance for Russian companies is going up as investors perceive a higher risk as a result of sanctions.
Mikhail Shamolin, CEO of Sistema, says the Russian economy needs to see more privatization and mortgage issuance.
Moscow's decision to cut off Ukraine's gas supply is a "demonstration of power," says Robert McFarlane, Co-Founder, United States Energy Security Council.
Russian deputy Prime Minister Arkady Dvorkovich slams sanctions imposed on the country as "stupid" and says the country is open for investment and trade.
Thomas Reed, CFO of Ruspetro, says the crisis in Ukraine has cast a shadow over the Russian oil industry with investment in the country being hit.
The State Department confirmed that Russia has sent tanks and other heavy weapons to separatists in Ukraine. NYT reports.
The Ukrainian prime minister ordered the energy sector to prepare for Russian gas cuts after Moscow and Kiev failed to resolve a gas price conflict.
Ukraine accused Russia of allowing three tanks and other military vehicles to cross into Ukraine to help pro-Russian separatists.
Russian police have arrested two hackers suspected of extorting money from Apple users.
Chris Weafer, senior partner at Macro-Advisory, says investors remain reluctant to increase their exposure to Russia until the risk is further reduced.
Western officials hope that informal contacts between Putin and Poroshenko during the event can help ease tensions over Ukraine's future.