Don't have time to translate all, but I'll do the first paragraph
Improvement of relations(hips)
The negotiations that enabled the change were conducted by Secretary of State Cyrus Vance, Carter's advisor for National Security Zbigniew and the soviet ambassador in Washington, Anatoly Dobrynin. They were surrounded by such secrecy that, when the White House announced the fact, the dissidents were already in the US when the soviet spies flew to Moscow