Naftohaz press office wrote on Twitter, Censor.NET reports.
"Andrii Koboliev met with U.S. Secretary of Energy Rick Perry, who confirmed that the U.S. is dead set against construction of the Nord Stream-II."
On March 27, 2017, Naftohaz Ukrainy filed a claim to the European Court of Justice demanding European Commission to revoke its decision of Oct. 28, 2016 which allows the Russian Gazprom to significantly increase the use of OPAL gas pipeline and boost gas deliveries through the Nord Stream.
In December 2016, Ukrainian President Petro Poroshenko and Polish President Andrzej Duda made joint statement calling to review the European Commission's decision, which provided Gazprom the opportunity to increase gas supplies to Europe bypassing Ukraine.
The OPAL gas pipeline connects the offshore Nord Stream pipeline with the gas infrastructure of the Czech Republic. It started operating in 2011.