"The letter in an absolutely unacceptable threat to German companies. This is an expression of the changed US foreign policy. Washington relies on confrontation, not cooperation with its allies. I deeply regret this," Seele said as quoted by German newspaper Handelsblatt.
Seele expressed the belief that Europe did not need US "tutorship" on energy policy.
"We'll take care of our own energy policy so that security of deliveries and competitiveness are regulated in such a manner that we find satisfactory," Seele said.
He specified that he did not believe that the possible sanctions against the Nord Stream participating companies would have significant influence since unilateral restrictions always had "limited effect."
Nord Stream 2 to Most Likely Be Launched in Late 2019
Meanwhile, OMV Executive Board member Manfred Leitner said that most probably Nord Stream 2 project would be launched in late 2019.
"I say nine [out of ten]," Leitner told Der Standard, answering a question on how he would assess on a scale from one to ten the probability that Nord Stream 2 would be launched in 2019.
Speaking about Washington's reaction and its desire to close the project, Leitner noted that economic interests, as well as interests of the authorities, come first in this case.
"I am grateful that the Austrian government took a clear position on this issue, and the position of the German government is still clear. Ultimately, clients will decide whether the project is successful," he added.
Nord Stream 2 is a joint venture of Russian gas giant Gazprom and five European companies, including the OMV. It aims to deliver 55 billion cubic meters (1.9 trillion cubic feet) of Russian natural gas annually to the European Union via the Baltic Sea and Germany. The pipeline project has been welcomed by some countries in Europe and opposed by others.
The United States has been strongly opposing Nord Stream 2 project. In this regard, Russian President Vladimir Putin has voiced the belief that US leader Donald Trump was seeking to force Russia out of the European energy market so that the United States could sell more liquefied natural gas to Europe.