US intelligence spent years training agents in Ukraine while trying to keep it secret from Moscow, the German outlet claims A Ukrainian group that is allegedly behind the Nord Stream gas pipelines’ explosion in September 2022 has had “longstanding connections” to the CIA, Der Spiegel reported in a lengthy piece published on Wednesday. US agents trained some members of the sabotage team for many years, including its purported mastermind, Roman Chervinsky, according to the German outlet. The US-