Amid tensions, NATO chief heads to DC

NATO Chief Mark Rutte heads to Washington to meet with President Trump as tensions simmer over defense spending. Meanwhile, Iran negotiations had a shaky start on Sunday after Israeli strikes on Lebanon and Trump’s continued threats against Tehran. And the White House is weighing the future of AI regulation as talks with Anthropic continue over safeguards for this rapidly advancing technology.  Follow POLITICO here:     ➤ X: https://x.com/politico/  ➤ Instagram:  / politico       ➤ Facebook:  / politico    For more news and analysis, subscribe to the Playbook newsletter: politico.com/playbook