The only improvement upon “A rifle behind every blade of grass” is “Dozens of RP

The only improvement upon “A rifle behind every blade of grass” is “Dozens of RPG’s, Missiles, and Manpads behind every blade of grass.” This strategy will stay true through the age of robotics. It will always be more costly to cross and occupy territory than to defend it within. https://twitter.com/curtdoolittle/status/1503766391039557634