KUALA LUMPUR — At an age when most people would either be dead or coming up on three decades’ retired, Mahathir Mohamad shows no signs of slowing down in his second coming as Malaysia’s prime minister. It has been a hectic year-and-a-bit back in office for the world’s oldest head of government, who turns 94 today. From renegotiating multi-billion-dollar railway construction deals with China to lambasting the European Union over proposed curbs on palm oil imports, he has arguably been as dynamic as any leader living. Making regular public appearances and often giving lengthy speeches – hands on podium and his back goalpost-straight throughout – Mahathir is, as he put it in March, “in a hurry”. “I realise I don’t have much time,” he explained. It’s not just Mahathir’s prodigious age that has the clock ticking. After he led the Pakatan Harapan (PH, Alliance of Hope) coalition to a historic first-ever opposition win in Malaysia’s parliamentary elections last year, the idea was that Mahathir – the country’s longest-ruling leader by dint of his first 1981-2003 tenure – would step down after a year or two in favour of former protégé-turned-nemesis-turned-ally Anwar Ibrahim, the leader of the Parti Keadilan Rakyat (PKR, People’s Justice Party), the biggest party in the PH alliance.