BERLIN/KIEV (Reuters) - After months of ratcheting up pressure on Vladimir Putin, concern is mounting in Berlin and other European capitals that an emboldened Ukraine's military successes in the east are reducing the chances of a face-saving way out of the crisis for the Russian leader.
As a result, the focus of German-led diplomatic efforts has shifted, according to senior officials, towards urging restraint from Ukrainian President Petro Poroshenko and averting a humiliating defeat for pro-Russian rebels, a development that Berlin fears could elicit a strong response from Putin.