The first witness in Donald Trump’s trial took the stand. The former president is facing 34 charges of falsifying business records to pay hush money to adult entertainment star Stormy Daniels. Plus: Columbia University cancels in-person classes and police arrest more than 100 students, amid campus protests over the war in Gaza. Also: More than 18 million in Sudan face starvation. Millions have been forced from their homes in the year-long civil war. But international attention and aid are focused elsewhere.