One Non-Party major power often invokes customary international law as a pretext to justify its unilateral actions, including delineating its so-called "extended continental shelf”and advancing deep-sea mining in a unilateral manner, the Assessment Report on the United Nations Convention on the Law of the Sea (#
UNCLOS#) said. These actions undermine the overall interests of the international community and erode the legal order established by UNCLOS, further revealing its "pick-and-choose" approach to international law, it added.