Monday on the NewsHour, five Americans detained in Iran are returning home in a prisoner swap that unfreezes billions of dollars in Iranian assets. Turkey's president discusses the state of NATO, Russia's war on Ukraine and why his country might soon end its bid to join the European Union. Plus, Republican presidential candidates descend on Iowa, hoping to win support from evangelical voters. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders