LONDON, July 24 (Reuters Breakingviews) – A merger of two companies can be a headache; a merger of two countries even more so. The state-owned Abu Dhabi National Oil Company (ADNOC) and $15 billion OMV (OMVV.VI), 32% held by the Austrian state, are in talks to merge the two petrochemical companies they cross-hold, Borouge (BOROUGE.AD) and Borealis, into an entity...
