File Photo Nigeria Union of Petroleum and Natural Gas Workers, NUPENG, has threatened a nationwide strike over attack on leaders of the Nigeria Labour Congress, NLC including its President, Ayuba Wabba and other Labour leaders during Tuesday’s peaceful protest in Kaduna State as part of the ongoing five-day strike to force the state government to rescind alleged anti-workers policies including the recent mass sack of workers. The thugs had attacked the labour leaders after Governor Nasir el- Rufai left the Power Holding Company of Nigeria, PHCN, adjacent where the workers assembled, with heavily armed security personnel. The armed thugs came in a bus and attacked the Labour leaders with various weapons including stick, bottles, stones and machete. Reacting to the development, NUPENG expres...