COMMENT The redoubtable Dr Mahathir Mohamad is once again on the warpath.

In recent months, he has fired salvo after salvo of withering criticism against Prime Minister Najib Abdul Razak accusing Najib of a whole array of sins - mismanaging the economy, squandering billions, living lavishly, mishandling the Altantuya Shaariibuu murder investigation, not being a strong leader, burdening the people with Goods and Services Tax, kowtowing to the United States on the Trans Pacific Partnership Agreement etc.

He has even levelled against Najib what is perhaps the ultimate insult in his lexicon - being worse than former prime minister Abdullah Ahmad Badawi!