>>14
Generally you're not invited to the war until your citizens or soldiers get attacked.
If by your logic, the US should have been attacked by Western Europe for violating the sovereignty of Iran, Nicaragua, Cuba, and most recently, Iraq.
Who made America the world police? If you cite your strength then you give justification for any strong nation to attack a weaker one.
Claiming that the North Vietnamese attacked your ships, when they actually didn't, and wasting thousands of US and Vietnamese lives as a consequence could be considered "illegal".