NATO leaders entered a special emergency session after President Donald Trump reportedly spoke very bluntly about his demands that the countries spend more on defense.
During the summit, Trump reportedly broke diplomatic protocol by calling German Chancellor Angela Merkel by her first name, saying "Angela, you need to do something about this," a source told Reuters.
Leaders of Azerbaijan and Georgia, non-NATO members, were asked to leave for the emergency session.
Trump singled out Germany on Wednesday when he accused them of being "totally" controlled by Russia because Russia provides a large share of their oil and natural gas. Merkel fired back that Germany was independent and a strong NATO ally.
"The language was much tougher today," a source told Reuters. "His harshest words were directed at Germany, including by calling her Angela --'You, Angela.'"