"Trump's South Carolina Victory and Ukraine Anniversary: Weekend Rundown"

Former President Trump wins South Carolina, putting him in a strong position for the Republican presidential nomination; Ukraine marks two years since Russian invasion, President Zelenskyy calls for urgent weapons from allies; fears of famine grow in Gaza as cease-fire negotiations continue; first responders at U.S.-Mexico border struggle with trauma; abortion rights advocates warn about more restrictions after IVF ruling; climate change disrupts water cycle across the U.S.; and other news including a student's death in Oklahoma, a judge shot in Alabama, and a landmark study on food allergies.