THE eastern-based Libyan National Army (LNA) dismissed a ceasefire announcement by authorities in the capital, Tripoli, as a marketing stunt, saying rival forces were mobilising around front lines in the centre of the country. Its spokesman, Ahmed Mismari, said the LNA was ready to respond to any attempted attack on its positions around the coastal city of Sirte, and Jufra, to the south. Mismari's comments were the first by the LNA after the announcement on Friday of a ceasefire and a call for the resumption of oil production by Fayez al-Sarraj, who heads the Government of National Accord (GNA) in…