US-Iran tensions: Pete Hegseth, United States Secretary of War, on Wednesday said that a US submarine had sunk the Iranian ship “IRIS Dena.” Meanwhile, the White House released a black-and-white video of the strike. US-Iran tensions: Pete Hegseth, United States Secretary of War, on Wednesday said that a US submarine had sunk the Iranian ship “IRIS Dena.” Meanwhile, the White House released a black-and-white video of the strike.