• Lisa Murkowski says she will vote against calling witnesses
• Book says Trump told Bolton to help pressure Ukraine
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8.46pm GMT

The impeachment trial has resumed, and Trump’s legal team will now have two hours to address the debate over calling witnesses to testify in the trial.

Deputy White House counsel Patrick Philbin has taken the podium to argue against witnesses, claiming the senators have heard enough testimony from the officials who participated in the public hearings of the House impeachment inquiry.

8.41pm GMT

Senate majority leader Mitch McConnell was hosting some of his Republican colleagues in his office during the break, likely working through the logistics of the trial’s conclusion, but he is now headed back to the chamber.

So far senators Thune, Tillis, Romney, Alexander and Murkowski have emerged from McConnell's office. I frankly have no idea whether they want to push this through late tonight or punt it to next week.

Aaaand McConnell just emerged to head back to the Senate floor

• Democrats continue prosecution on third day of trial
• Jerry Nadler says Trump’s conduct ‘puts even Nixon to shame’
• Democrats criticize Republicans, who claim house managers are repeating themselves, for not allowing new evidence
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2.51am GMT

A few more scenes from the trial chamber:

Senators and 2020 Democratic presidential candidates Bernie Sanders and Amy Klobuchar reportedly shared a laugh.

On the floor, Bernie Sanders looked quite tired, ultimately got up, walked to the back of the chamber - and chatted briefly with Amy Klobuchar. She pointed to something in her binder. They both shared a laugh and Sanders retreated to the cloak room.

Sen. Tillis is not in his seat at the moment. He’s sitting watching from above in the visitor gallery, for some reason

2.30am GMT

Emphasizing that nearly $400m in congressionally-appropriated military aid to Ukraine was held up for no good reason, the impeachment manager Zoe Lofgren, with the Senate majority leader, Mitch McConnell, sitting nearby, pointed out: “Even Senator McConnell has said ‘I was not given an explanation’ for the hold.”

The evidence is clear that Donald Trump “knowingly, willfully violated the law when he withheld the aid to Ukraine”, Lofgren said. “It shows the great lengths the president was willing to go to in order to pressure Ukraine to do his dirty work.”