Donald Trump’s closest campaign advisers, top government officials and even his family were dismantling his false claims of 2020 election fraud ahead of Jan. 6, but the defeated president seemed “detached from reality” and clinging to outlandish theories to stay in power, the committee investigating the Capitol attack was told Monday.

With gripping testimony, the panel is laying out in step by step fashion how Trump ignored his own campaign team’s data as one state after another flipped to Joe Biden, and instead latched on to conspiracy theories, court cases and his own declarations of victory rather than having to admit defeat.

Trump’s “big lie” of election fraud escalated and transformed into marching orders that summoned supporters to Washington and then sent them to the Capitol on Jan. 6 to block Biden’s victory.

“He’s become detached from reality if he really believes this stuff,” testified former Attorney General William Barr in his interview with the committee.

Russian forces cut off the last routes for evacuating citizens from the eastern Ukrainian city of Sievierodonetsk, a Ukrainian official said, as the Kremlin pushed for victory in the Donbas region.

The last bridge to the city was destroyed, trapping any remaining civilians and making it impossible to deliver humanitarian supplies, said regional governor Sergei Gaidai, adding that some 70% of the city was under Russian control.

Ukraine has issued increasingly urgent calls for more Western heavy weapons to help defend Sievierodonetsk, which Kyiv says could hold the key to the battle for the eastern Donbas region and the course of the war, now in its fourth month.

Late on Monday, President Volodymyr Zelenskiy said the battle for the eastern Donbas would go down as one of the most brutal in European history. The region, comprising the provinces of Luhansk and Donetsk, is claimed by Russian separatists.