"These materials, taken in their entirety, provide the most complete public picture of the events surrounding the meeting to date," said Sen. Chuck Grassley in a statement Wednesday morning, per the BBC. Their entirety is a substantial one: The Senate Judiciary Committee released 2,500 pages of testimony and exhibits related to the June 2016 Trump Tower meeting between Donald Trump's son and others with a Russian attorney—a meeting that's been a focus of Robert Mueller's probe. Music promoter Rob Goldstone testified that he told Donald Trump Jr. via email that Russian lawyer Natalia Veselnitskaya had dirt on Hillary Clinton because his client, Russian pop star and developer Emin Agalarov, had been adamant about securing the meeting and because he was told Veselnitskaya was both "well connected" and had "damaging material," reports the Washington Post. Some initial takeaways: