The scorched-earth war between Malaysian Prime Minister Najib Tun Razak and his one-time mentor, former Premier Mahathir Mohamad, has extended to the northern state of Kedah, where Mahathir’s son, Mukhriz, rules as chief minister. The federal government in Putrajaya reportedly has cut budget allocations to the state, one of the country’s poorest, and is dragging its heels on a proposal by Mukhriz to build an airport in the city of Kulim which Mukhriz deems crucial to boosting the local economy. Reportedly other economic initiatives have been blocked through the federal government's refusal to pay full land premium for land that Mukhriz is attempting to convert to industrial uses. He is also encountering sniping from Najib forces in the state over his performance as chief minister