5 things to know for March 20: Department of Education, Pentagon purge, Gaza, Taxpayer data, Alzheimer’s

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The world’s happiest country has been announced and for the eighth year in a row … it’s Finland! Researchers credited the country’s strong social support systems, high trust levels and a less materialistic mindset. The US, on the other hand, received its lowest ranking ever. Here’s what else you need to know to Get Up to Speed and On with Your Day. President Donald Trump is poised to sign an executive order today to begin the process of dismantling the Department of Education, two administration officials told CNN. Last week, the DOE announced it was cutting 50% of its workforce, a move decried by unions representing federal workers and teachers. The department’s civil rights office, which combats antisemitism, islamophobia, racism and discrimination against students with disabilities, was among the hardest hit. Nearly half of its staff was laid off and its regional offices in Boston, Chicago, Cleveland, Dallas, New York, Philadelphia and San Francisco were closed. Secretary of Defense Pete Hegseth’s order to remove “diversity” content from all of the Pentagon’s platforms has led to a massive purge of information. Tens of thousands of articles about cancer awareness, the Holocaust, the 9/11 terror attacks, sexual assault and suicide prevention were removed as was content about women, LGBTQ people and people of color — including baseball legend Jackie Robinson, who served in the US military during World War II. The automated process has led to “a high level of irresponsible collateral damage,” one defense official said. Separately, the Pentagon is considering making significant cuts to the top of the US military, according to a briefing document obtained by CNN and a US defense official. The plans under consideration include consolidating combatant commands, possibly eliminating a directorate that oversees development, training and education for the joint force and halting the expansion of US forces in Japan. The Israeli military launched a new ground offensive in the Gaza Strip on Wednesday in an effort to “expand the security zone and to create a partial buffer between northern and southern Gaza.” The move comes just one day after Israel broke a 2-month-old ceasefire with Hamas by conducting airstrikes in Gaza that killed at least 400 people, according to Gaza’s Health Ministry. Hamas described the latest offensive as a “new and dangerous breach,” and said it remains committed to the ceasefire deal signed in January. Additional Israeli airstrikes overnight claimed at least 40 more lives, the European Hospital said. The IRS and the Department of Homeland Security are engaged in discussions about sharing highly confidential taxpayer data to help authorities ramp up deportations. Currently, undocumented immigrants can register with the IRS and pay taxes — and the agency is required to keep their private information confidential, except in very specific circumstances specified in the tax code. Two immigrant rights groups have already filed suit to block the effort, but on Wednesday, a district judge declined to issue an emergency order blocking the IRS from sharing the data.