Yoshikawa hopes that, assuming environmental preservation is not enough, the sheer incompetency of the FRF project will allow U.S. lawmakers to see that its strategic advantage is overpromised.

“Clearly, building yet another giant U.S. base in Okinawa does not decrease, but rather increases, the likelihood of attack,” the letter argues in its concluding notes.

Yoshikawa pointed out that the articles of the Geneva Convention, which seek to protect civilian populations amid military conflicts, would prove useless in Okinawa: The physical proximity between the bases and civil society would make the convention’s protections difficult, if not impossible, to enforce.

“We would be used as human shields for military bases, not the other way around,” Yoshikawa said. “We don’t want to be used and we don’t want our seas, forests, lands and skies to be used in the conflicts of states.”