The US justice department on Friday announced that a grand jury convened by special counsel Robert Mueller had indicted 13 Russians and three Russian entities in an alleged conspiracy to defraud the United States, including by tampering in the 2016 presidential election on behalf of Donald Trump and against Hillary Clinton.

Here are the 10 key takeaways:

Q&A Is Trump preparing to fire Mueller? Show “No, I’m not,” the president said in mid-December. But in fact Trump had ordered special counsel Robert Mueller’s firing in June 2017, just one month after Mueller was appointed, the New York Times reported. Trump backed down when the White House Counsel, Donald McGahn, refused to convey the order to deputy attorney general Rod Rosenstein. Trump-aligned voices on Capitol Hill and in the media, meanwhile, prominently including Fox News, continue to call for Mueller’s head, and attacks on Mueller from inside the White House have proliferated. Photograph: Charles Dharapak/AP