Aaron Katersky reports on the confessional video the shooter who opened fire at Brown University and then traveled to Massachusetts to murder an MIT professor left before killing himself at a New Hampshire storage facility, federal investigators said; Rachel Scott has the latest on what sources tell ABC News about the U.S. issuing a list of demands to Venezuela that the regime must meet before allowing the country to sell more oil; after holiday gatherings and travel, Stephanie Ramos has details on the record-breaking surge in flu cases with CDC estimating at least 11 million illnesses from flu so far this season; and more on tonight’s broadcast of World News Tonight with David Muir.

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Just a little over 48 hours after Nicolas Maduro ruled a nation of millions with the world’s largest oil reserves, the deposed Venezuelan dictator is a shackled criminal defendant. Aaron Katersky reports on Maduro pleading not guilty and claiming he's "still president;” Martha Raddatz has new details on the daring U.S. military operation to capture Maduro and his wife in Venezuela; With Delcy Rodriguez formally sworn in as the acting president of Venezuela, James Longman has the latest on the fallout unfolding inside the country; and more on tonight’s broadcast of World News Tonight with David Muir.

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Martha Raddatz has details on the U.S. military operation months in the making to capture Venezuelan Pres. Nicolas Maduro and his wife in Caracas; Rachel Scott reports as Secretary of State Marco Rubio suggests the U.S. will push for government changes in Venezuela through oil blockades. It comes 24 hours after Pres. Trump declared the U.S. would "run" the South American country; Whit Johnson has the latest on Maduro’s planned first appearance in federal court Monday; James Longman reports from the border with Venezuela on the both the celebration and anxiety about what comes next for the country; and more on tonight’s broadcast of World News Tonight with David Muir.

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Morgan Norwood has the latest on the bone-chilling cold in the Northeast is fueling a lake effect snow machine in Western New York that shows no signs of letting up, and the high tides in California that have inundated the Bay area with flooding – submerging cars in murky water; Tom Soufi-Burridge has details on the new video capturing the harrowing moment flames start engulfing the ceiling inside a bar in the Swiss Alps as investigators say that sparklers may have led to deadly inferno; amid widespread anti-government demonstrations in Iranian cities, Maggie Rulli reports on Pres. Trump’s warning to Iran, saying that the U.S. is "locked and loaded,” and vowed to step in if Iran kills peaceful protestors; and more on tonight’s broadcast of World News Tonight with David Muir.

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Reena Roy reports on the millions of Americans facing flood threats in Southern California and Brittany Bell is tracking the frigid cold and lake-effect snow; Tom Soufi Burridge has the latest after flames ripped through a bar during a New Year's celebration in a ski resort town in the Swiss Alps, killing about 40 people and injuring more than 100; Selina Wang reports after health care subsidies expired for over 20 million Americans, with costs set to skyrocket after Congress failed to reach a deal; Ike Ejiochi has details on the mystery in Ohio after a dentist and his wife were found shot to death inside their home; and more on tonight’s broadcast of World News Tonight with David Muir.

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Lee Goldberg has the New Year’s Eve forecast as millions are under alerts for heavy snow, rain and brutal cold, with freezing temperatures from Minnesota to New York; Reena Roy reports as authorities across the country are on high alert preparing for New Year’s Eve celebrations; Jay O’Brien has details on the sweeping decision by the Trump Administration to freeze millions of dollars in federal child care funds for every state in the U.S.; Selina Wang reports as more than 20 million Americans brace for their health care costs to skyrocket after the enhanced ACA tax subsidies expire at midnight; David Muir shares his New Year’s Eve message; and more on tonight’s broadcast of World News Tonight with David Muir.

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Faith Abubey reports on the blizzard conditions paralyzing parts of Upstate New York as Southern California braces for more rain, and Ginger Zee has the New Year’s Eve forecast; Selina Wang has reports on the dramatic escalation in Pres. Trump's pressure campaign against Venezuela after the CIA reportedly carried out a drone strike on a dock facility in Venezuela allegedly used to transport drugs overseas; Andrew Dymburt has the latest on the new accusations against New England Patriots star Stefon Diggs, who’s been accused of attacking his personal chef over a payment dispute; and more on tonight’s broadcast of World News Tonight with David Muir.

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Faith Abubey reports on the dangerous system snarling holiday travel as it sweeps across the country with powerful winds and blinding snow; Ginger Zee tracks the storm and has the New Year’s Eve forecast; Rhiannon Ally has new details on the investigation into the deadly midair collision involving two helicopters and the victims that have been identified; Selina Wang has the latest on President Trump’s vow to begin rebuilding Gaza “as quickly as we can” – if Hamas disarms – following his meeting with Israeli PM Benjamin Netanyahu; and more on tonight’s broadcast of World News Tonight with David Muir.

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Dani Beckstrom reports on a new winter storm taking aim at the Midwest and Northeast as millions are set to travel, thousands of flights already delayed or cancelled, our weather times it all out including the deadly flooding in southern California; Morgan Norwood with the latest on a deadly mid-air helicopter collision in New Jersey; Selina Wang is with President Trump as he meets with Ukrainian president Zelenskyy to discuss ending Russia’s war; and more on tonight’s broadcast of World News Tonight with David Muir.

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Faith Abubey has the latest on the whiteout conditions moving into the Northeast as millions head home from Christmas and millions more head out for the new year, and Lee Goldberg tracks the dangerous winter storm; Selina Wang reports on the new video released from the Pentagon showing a U.S. warship firing one of more than a dozen missiles targeting ISIS in Nigeria, an official told ABC News; Andrew Dymburt has details on Ashlee Buzzard, the California mother charged in the shooting death of her 9-year-old daughter Melodee Buzzard, pleading not guilty to murder charges at her arraignment; and more on tonight’s broadcast of World News Tonight with David Muir.

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