evidence: Her statement is the latest development in a domestic quest to find out why the country - under the administration of then-prime minister Mahathir Mohamad - dropped its application in 2018 to revise an International Court of Justice (ICJ) ruling that Singapore had sovereignty over Pedra Branca, one of the islets. [...] "Who is responsible for making the decision that caused Malaysia to lose its rights to Batu Puteh?" she asked, using Malaysia’s name for Pedra Branca. [...] Singapore has said that it stands ready to "robustly defend" its sovereignty over Pedra Branca.