Holly Ellyatt writes for CNBC.com focusing on European macro-economics and politics. She has led digital coverage of the Greek and Russian financial crises and broader euro zone news, as well as covering the U.K. economy, the 2015 election and Brexit debate. Holly joined CNBC in 2012, having worked previously in digital, radio and film production. She studied European Social and Political Studies at University College London (UCL) and Broadcast Journalism at City University.
Greece's central bank has warned that the country could experience an "uncontrollable crisis " and "Grexit" if talks with lenders fail.
U.S. Secretary of State John Kerry said Russia's plans to buy more intercontinental ballistic missiles could herald a return to the "Cold War."
Russia hopes to rebuild its investment outlook and relationship with the rest of the world during its international economic forum.
Russia has warned that any stationing of military equipment along the border with eastern Europe could have "dangerous consequences."
As Greece remains defiant, anger and concern is mounting in Europe about the finale to this Greek crisis.
Greece's Prime Minister Alexis Tsipras is to hold an emergency government meeting at midday London time, according to Greek media reports.
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CNBC looks at how the computer systems in F1 cars have made their way into regular vehicles.
FIA President Jean Todt discusses his start with the Ferarri team and the current problems facing F1.
F1 experts discuss whether the quieter engine sounds are making the sport less attractive.