afghan comrades. >> we have given them total authorization. frankly, that's why they've been so successful. >> the largest non-nuclear bomb targeting isis fighters. >> 16 years after 9/11, we are still fighting a war in afghanistan. >> we have more threats right now than ever before. we need a strategy. >> mounting concerns that north christine romans could conduct its sixth nuclear test. >> it's entirely plausible he might consider using chemical weapons. >> it's a touch-and-go situation that could escalate into an all-out conflict. >> north korea is a problem. the problem will be taken care of. >> announcer: this is "new day" with chris cuomo and alisyn camerota. good morning, everyone. welcome to your "new day." chris is off this morning and john berman joins me. happy friday. great to have you here. >> good to be here. breaking news. the pentagon releasing new video of that massive bomb that hit and killed dozens of tunnels and caving in eastern afghanistan. the u.s. commanding general