President Nicolás Maduro of Venezuela at a rally in Caracas, the capital, earlier this month.

Secretary of State Marco Rubio, center, during talks in Geneva on Sunday with Ukrainian officials on a plan to end the war with Russia.

Nicolás Maduro carries the flag of Chavismo, the brand of socialism promulgated by his predecessor, Hugo Chávez.

Harvard has sued the Trump administration twice over its efforts to block international students and federal funding.

Columbia University administrators summoned the Police Department on Wednesday to arrest demonstrators who had occupied the main library.

Dr. Noor Abdalla, wife of Mahmoud Khalil, at her home in New York, last month. She went into labor Sunday.

In some cases, the Trump administration has said existing federal law already gives the president all the power he needs to act.

President Volodymyr Zelensky of Ukraine was scheduled to meet on Monday with Crown Prince Mohammed bin Salman, Saudi Arabia’s de facto ruler.

Secretary of State Marco Rubio being welcomed on Monday by the Saudi foreign minister, Prince Faisal bin Farhan al-Saud, in Riyadh.

Former President Donald J. Trump attacked the judge and criminal justice system after being found guilty on 34 felony charges.