(February 13, 2018, 12:12 PM EST) -- LONDON — An England and Wales High Court justice on Feb. 9 ordered a group of Mauritius investors to post security costs in favor of the Islamic Republic of Pakistan in relation to the investors’ challenge of an arbitral award issued in Pakistan’s favor in a dispute over the sale of an energy gas company (Progas Energy Limited, et al. v. The Islamic Republic of Pakistan, No. [2008] EWHC 209 [Comm], England and Wales High, Comm.)....