The documents, which have not previously been made public, reveal new aspects of the plan, including the proposed involvement of a Russian company currently under U.S. sanctions to manufacture nuclear equipment. That company, major engineering and construction firm OMZ OAO, declined to comment, Reuters reported.
The documents do not show whether Flynn, a retired Army lieutenant general, took concrete steps to push the proposal with Trump and his aides. But they do show that Washington-based nuclear power consultancy ACU Strategic Partners believed that both Flynn, who had worked as an adviser to the firm as late as mid-2016, and Trump were firmly in its corner.
"Donald Trump's election as president is a game changer because Trump's highest foreign policy priority is to stabilize U.S. relations with Russia which are now at a historical low-point," ACU's managing director, Alex Copson, wrote in a Nov. 16, 2016 email to potential business partners, eight days after the election.
White House officials did not immediately respond to an email seeking comment. ACU declined to comment and also declined to make Copson available for an interview. Previously they told a congressional committee that they had not had any dealings with Flynn since May 2016, before Trump became the Republican Party's presidential candidate.
Flynn's lawyer, Robert Kelner, did not respond to a request for comment.
The documents also show that ACU proposed ending Ukraine's opposition to lifting sanctions on Russia by giving a Ukrainian company a $45 billion contract to provide turbine generators for reactors to be built in Saudi Arabia and other Mideast nations.
Read alsoTrump-Russia: Michael Flynn admits lying to FBI – mediaThe contract to state-owned Turboatom and loans to Ukraine from Gulf Arab states would "require Ukraine to support lifting U.S. and EU sanctions on Russia," Copson wrote in the Nov. 16 email.
A Turboatom spokeswoman said she did not have an immediate comment on the matter.
The email was titled "TRUMP/PUTIN ME Marshall plan CONCEPT." ME stands for Middle East. The title, evoking the post-World War Two plan to rebuild Western European economies, reflected the hopes of the plan's backers that Trump and Russian President Vladimir Putin could cooperate on a project that would boost Middle East economies.
The ACU documents reviewed by Reuters include emails, business presentations and financial estimates and date from late autumn 2016.