Volodomyr Zelenskiy

Rep. Adam Schiff is shown standing bedhing a podium with several other lawmakers standing behind him.

Watch live: Trump impeachment trial enters pivotal week as calls for witnesses grow

Trump impeachment

US President Donald Trump’s impeachment trial enters a pivotal week on Monday as his lawyers resume their defense following a fresh report that could intensify pressure on Senate Republicans to call former national security adviser John Bolton to testify. Stream the Senate proceeds live here starting at 1 p.m. ET.