WASHINGTON—The U.S. has burned through so many munitions in Iran that some administration officials increasingly assess that America couldn’t fully execute contingency plans to defend Taiwan from a ...

In the event of a Chinese invasion, etc., the possibility that North Korea might be provoked by China or take independent ...

Add Yahoo as a preferred source to see more of our stories on Google. A simulation called "Plan A" produced by researchers shows how the use of one so-called tactical or low-yield nuclear weapon could ...