A weekly digest of national security, defense, and cybersecurity news from Foreign Policy reporters Jack Detsch and Robbie Gramer, formerly Security Brief. Delivered Thursday.Welcome to Foreign Policy’s Security Brief. What’s on tap today: U.S. Defense Secretary Mark Esper is in hot water, ex-Pentagon chief James Mattis lashes out at Trump, and the State Department’s fired watchdog speaks out.If you would like to receive Security Brief in your inbox every Thursday, please sign up .Esper Is On the Ropes With Trump, Mattis Lashes OutWelcome to Foreign Policy’s Security Brief. What’s on tap...…A weekly digest of national security, defense, and cybersecurity news from Foreign Policy reporters Jack Detsch and Robbie Gramer, formerly Security Brief. Delivered Thursday.Welcome to Foreign Policy’s Security Brief. What’s on tap today: U.S. Defense Secretary Mark Esper is in hot water, ex-Pentagon chief James Mattis lashes out at Trump, and the State Department’s fired watchdog speaks out.If you would like to receive Security Brief in your inbox every Thursday, please sign up .Esper Is On the Ropes With Trump, Mattis Lashes OutWelcome to Foreign Policy’s Security Brief. What’s on tap...WW…

Nearly 100 years ago, Irish Americans formed the bedrock of the New Deal-era Democratic Party. Today, they’re up for grabs. And in a swing state like Pennsylvania, that matters—a lot.Ireland hasn’t really been on the ballot since the 1990s, when decades of violence were put to rest by the Good Friday Agreement in 1998. Now, the fate of Northern Ireland’s tenuous peace process is again in question, thanks to the British government’s decision to rewrite its divorce agreement with the European Union, threatening a return to checkpoints and a hard border between Northern Ireland—which is part...…Nearly 100 years ago, Irish Americans formed the bedrock of the New Deal-era Democratic Party. Today, they’re up for grabs. And in a swing state like Pennsylvania, that matters—a lot.Ireland hasn’t really been on the ballot since the 1990s, when decades of violence were put to rest by the Good Friday Agreement in 1998. Now, the fate of Northern Ireland’s tenuous peace process is again in question, thanks to the British government’s decision to rewrite its divorce agreement with the European Union, threatening a return to checkpoints and a hard border between Northern Ireland—which is part...WW…