Turkmenistan hailed on Wednesday the completion of a $2.5 billion gas pipeline connecting its abundant eastern gas fields to the Caspian Sea while potentially expanding Europe's energy security options.
US President Barack Obama on Friday blocked the Keystone XL oil pipeline that Canada sought to build into the United States, ruling it would harm the fight against climate change.
Ukrainian Prime Minister Arseniy Yatsenyuk blasted a planned second gas pipeline under the Baltic Sea, claiming it would cost his country $2 billion (1.8 billion euros) a year in lost revenue.
After declining for months to announce her position on a major Canada-to-US oil pipeline, Democratic presidential hopeful Hillary Clinton said Tuesday that she is opposed to the controversial project.
Ukrainian Prime Minister Arseniy Yatsenyuk criticised as "anti-Ukrainian and anti-European" a deal between Russia's energy giant Gazprom and several Western firms to build a second gas pipeline under the Baltic Sea.
US Republican lawmakers held a ceremony hailing Congress's passage of the Keystone XL pipeline, but President Barack Obama has vowed to veto the legislation.