my ex
No.
To prevent war
charisma and war fame
There was no significance. The 38th Parallel was ignored through out the war.
Operation Sea Lion was Nazi Germany's planned invasion of the United Kingdom during World War II. Its significance lies in its role as a pivotal moment in the war; the failure to successfully execute the operation marked a major turning point, demonstrating that Britain could withstand German military efforts. The inability to achieve air superiority during the Battle of Britain ultimately thwarted Hitler's plans, solidifying British resistance and bolstering Allied morale. This failure also contributed to the eventual shift in the war's momentum in favor of the Allies.
The Korean War and the Vietnam War had the most lasting significance; we're still mourning our dead.
NATO did nothing to prevent the Cold War. NATO was created because of the Cold War and may have helped prevent it from becoming a hot war.
See question, how do you prevent a war against nothing
It is generally seen as an American failure in war.
Please be more specific. Which war?
To try and prevent future world wars from occurring. WWI was so terrible that people wanted it to be the "war to end all wars". The Great Depression, the rise of fascism, the failure of the League of Nations to respond to Japan's invasion of Manchuria and China all resulted in the League of Nations failing in it's main goal to prevent another world war.
Although two groups at war can try and talk it out, there is no guaranteed way to stop/prevent war.