BERLIN - German Chancellor Angela Merkel says she is "cautiously optimistic" that talks to resolve differences between Russia and Ukraine about the supply of natural gas will succeed.
Ukraine's Energy Challenge
Associated Press: Merkel ‘cautiously optimistic’ on Ukraine gas deal
Employees working near an underground gas storage in the village of Opari, some 70 kms south-west from Lviv on Sept. 30, 2014.
