Mahathir Mohamad wasted no time reminding Singapore why it was happy to see the back of him in 2003.
Just 74 days into his second stint as prime minister, Mahathir is challenging a high-speed rail link between Kuala Lumpur and Singapore. He is threatening to charge the city-state more for water. He is demanding renegotiation of the Trans-Pacific Partnership, a regional trade pact that includes Singapore.
