Pentagon requests funds for system to detect Russian, Chinese subs off US coast / Senate committee presses Pentagon watchdog for answers on Signal chat / Leaked Pentagon memo says US won't bother defending Europe from Russia / Federal court warns Pentagon not to act against transgender service members during appeal / Senate Armed Services leaders ask Pentagon watchdog to probe leaked Signal chat / U.S. needs Japan's guarantee to use bases in Taiwan war: Pentagon adviser / Pentagon declines to confirm reports that four US troops died during training in Lithuania / Pentagon warned of Russian Signal hacker infiltration after massive war plans bungle / Former Pentagon official on war plans group chat: 'There's going to be a fallout' / Pentagon 'still mystified' as drone drama deepens