The New Hampshire primary takes place today, with the Republican field essentially reduced to two presidential candidates: Donald Trump and Nikki Haley. Twenty-one soldiers are killed near the border with Gaza in the Israeli military's deadliest incident since the start of the war. And the parents of a teen who opened fire at his suburban Detroit high school in 2021 face trial over their criminal responsibility for having purchased the semi-automatic handgun he used to kill four.Want more comprehensive analysis of the most important news of the day, plus a little fun? Subscribe to the Up First newsletter. Today's episode of Up First was edited by Megan Pratz, Gerry Holmes, Cheryl Corley and Olivia Hampton.It was produced by Ziad Buchh, Ben Abrams and Kaity Kline. We get engineering support from Stacey Abbott. And our technical director is Zac Coleman.