Arbitration between nations must be voluntary, especially when the original arrangement included opting out clauses, that's what gives the institution its legitimacy. The PCA's perplexing overreach into international politics will likely diminish its own brand as a voluntary and impartial dispute mechanism. Also, China's ability to line up over 60 countries to denounce PCA overreach lends weight to its claim the court lacks legitimacy in this specific case.
PCA does not even follow their first rule. See PCA's Optional Rules for Arbitrating Disputes between Two States (1992). Section 1: Introductory Rules( Scope of Application), Article 1, Item 1.
Why is this "court" even wasting everyone's time and how could this have happened? It states clearly on the first item on the first article of the first section that Arbitration has to be agreed to in writing and China has clearly opted out of this provision.
PERMANENT COURT OF ARBITRATION OPTIONAL RULES
FOR ARBITRATING DISPUTES BETWEEN TWO STATES
Effective October 20, 1992
SECTION I. INTRODUCTORY RULES
Scope of Application
Article 1
PERMANENT COURT OF ARBITRATION OPTIONAL RULES
FOR ARBITRATING DISPUTES BETWEEN TWO STATES
Effective October 20, 1992
SECTION I.
INTRODUCTORY RULES
Scope of Application
Article 1
1.Where the parties to a treaty or other agreement have agreed in writing that disputes
shall be referred to arbitration under the Permanent Court of Arbitration Optional Rules
for Arbitrating Disputes between Two States, then such disputes shall be settled in
accordance with these Rules subject to such modification as the parties may agree in
writing.