Energy storage systems and batteries have been in focus over the last few years, especially due to higher interest in electric vehicles, grid-level and home-based energy storage batteries.

Crude oil has faced major decline in the recent months and investors have been closely following the trends in the energy sector.

Crude oil has become the focus of all investor talks this week as the energy markets witnessed West Texas Intermediate contract selling for no money (even in negative as per some reports).

Brussels - NATO and Russian diplomats were keen to find a way to revive an arms-control treaty which Russia suspended in 2007 at their first formal meeting since August's Russian-Georgian war, the alliance's spokesman said Wednesday.

Moscow - Murder charges were filed Wednesday against two suspects in connection with a series of bomb attacks in the city of Sochi, the venue of the 2014 Winter Olympics. The two men, who have already made admissions, were charged in the deaths of 5 persons and in injuring 19 others with home-made explosive devices, investigators said, the Itar-Tass agency reported.

Investigators said the two, a camera man and a member of the militia, gave an inferiority complex as their motive behind the series of blasts which took place on a beach, in a park, and in a number of interior apartment building courtyards.

Moscow - Russian President Dmitri Medvedev fired Moscow police chief Vladimir Pronin Tuesday, after one of his officers killed three people and wounded six in a shooting spree. Medvedev earlier Tuesday suspended several senior officers in the precinct where the shootings occurred, saying the local police should take full responsibility, Medvedev spokeswoman Natalia Timakova said.