US President Donald Trump claimed on social media that American forces had carried out large-scale strikes on Venezuela, with President Nicolás Maduro "flown out of the country." In an exclusive interview with CGTN's Tian Wei, Columbia University professor Jeffrey Sachs said the United States has become a war machine. Washington is singlehandedly ripping up the UN Charter, the lifeline designed to prevent the catastrophic wars of the 20th century from recurring.