NATO Secretary-General Mark Rutte called President Donald Trump "Daddy" on Wednesday, reacting to the president's recent use of expletives when he accused Iran and Israel of violating a ceasefire agreement.

The leaders reaffirmed their “ironclad commitment” to NATO’s collective defense clause, Article 5. In recent years, Trump had sowed seeds of doubt about whether the U.S. — NATO’s most powerful member — would come to the aid of any ally under attack.