#ukraine
"Biden would do well to remember the Powell Doctrine, formulated by the late secretary of state Colin L. Powell. He counseled against getting involved in “halfhearted half-wars” and argued that when the United States uses force, it should do so with overwhelming might to win. The same doctrine should apply to military assistance..."

https://www.washingtonpost.com/opinions/2022/06/05/ukraine-putin-donbas-artillery/