For the first time in more than 25 years, the FDA has approved a new active ingredient for over-the-counter sunscreens. It clears the way for manufacturers to begin using bemotrizinol, or BEMT, an ingredient that's been used in Europe and Asia since the 1990s. Amna Nawaz discussed why this change took so long and what people should know about it with dermatologist Dr. Rachel Nazarian.

To discuss the motivations and potential outcomes of this latest attempt to end the war in Iran, Amna Nawaz spoke with Alan Eyre and Miad Maleki. Eyre was part of the Obama administration's negotiating team for the Iran nuclear deal and is now at the Middle East Institute. Maleki was born and raised in Iran and is now at the Foundation for the Defense of Democracies.

Devlin Barrett has covered federal law enforcement for more than two decades. His new book pulls back the curtain on President Trump's Justice Department and the way he has used it as a tool to settle political scores. Amna Nawaz sat down with Barrett to discuss "The Department of Revenge: How Trump Took Control of American Justice."

To discuss the latest developments in the conflict between the U.S. and Iran, Amna Nawaz spoke with Joel Rayburn and Suzanne Maloney. Rayburn is a retired Army colonel and is now at the Hudson Institute. Maloney served in the State Department during the George W. Bush administration and is now at the Brookings Institution.

Friday is the deadline for Congress to reauthorize a key tool for collecting foreign intelligence. Critics on the left and the right argue that the Foreign Intelligence Surveillance Act is prone to abuse. Others say they won't back it until President Trump pulls his pick to oversee the intelligence community. Amna Nawaz discussed more with Republican Rep. Mike McCaul of Texas.

A new report from the Pew Research Center says American politics are not as simple as red versus blue. Pew surveyed more than 10,000 people and split the public into nine distinct groups along political and cultural values. Despite a polarized political environment, the report finds a minority of Americans are truly all-in for either party. Amna Nawaz discussed the findings with Jocelyn Kiley.