verb/sa.bɔʁ.de/
to scuttle (a ship); to pull the plug on
“Actuellement au pouvoir, son fils, le président Luis Lacalle Pou (élu en novembre 2018), paraît quant à lui, s'être donné pour mission de saborder le traité de 1991.” — As for his son, president Luis Lacalle Pou (elected in November 2018), currently in power, he seems to have taken upon himself the mission of pulling the plug on the 1991 treaty.
From sabord + -er.