President Donald Trump wants to know who exactly Harvard’s international students are—and why the countries they hail from aren’t paying up. Trump claimed the Ivy League university has not been forthcoming about how much of its student body international students make up in an early-morning screed on Sunday.

Donald Trump demanded Harvard University identify all foreign students attending the school, accusing the Ivy League institution of failing to disclose that it enrolls students from countries "not at all friendly" to the United States.

President Trump criticized foreign countries for paying "nothing" toward the education of their citizens at Harvard and other U.S. institutions.

Amid his ongoing battle with Harvard, President Trump claimed he was unaware international students' home countries don't cover their tuition, despite most paying with personal or family funds.

Harvard University is suing the Trump administration after it blocked the college’s ability to enroll new international students. In the latest development in the feud between Harvard and the federal government,