President Trump has gone to extraordinary lengths to conceal details of his conversations with Russian President Vladi­mir Putin, including on at least one occasion taking possession of the notes of his own interpreter and instructing the linguist not to discuss what had transpired with other administration officials, current and former U.S. officials said…

As a result, U.S. officials said there is no detailed record, even in classified files, of Trump’s face-to-face interactions with the Russian leader at five locations over the past two years. Such a gap would be unusual in any presidency, let alone one that Russia sought to install through what U.S. intelligence agencies have described as an unprecedented campaign of election interference…

Trump’s secrecy surrounding Putin “is not only unusual by historical standards, it is outrageous,” said Strobe Talbott, a former deputy secretary of state now at the Brookings Institution, who participated in more than a dozen meetings between President Bill Clinton and then-Russian President Boris Yeltsin in the 1990s. “It handicaps the U.S. government — the experts and advisers and Cabinet officers who are there to serve [the president] — and it certainly gives Putin much more scope to manipulate Trump.”…

“We were frustrated because we didn’t get a readout,” a former senior administration official said. “The State Department and [National Security Council] were never comfortable” with Trump’s interactions with Putin, the official said. “God only knows what they were going to talk about or agree to.”