The location may have been the first hint. The 23rd European Union-Russia summit on Friday was held in the Russian Far East city of Khabarovsk, a former Tsarist army outpost just a few dozen miles from the Chinese border and 5,000 miles east of Western Europe. The location seemed more aimed at inducing jet lag and awe at Russia’s size than at forging agreement on energy, an issue that has consistently soured relations between the two powers over the past months and which the summit failed to resolve