 All 197 UNFCCC members have either signed or acceded to the Paris Agreement.Both the EU and its member states are individually responsible for ratifying the Paris Agreement.A strong preference was reported that the EU and its 28 member states deposit their instruments of ratification at the same time to ensure that neither the EU nor its member states engage themselves to fulfilling obligations that strictly belong to the other, and there were fears that disagreement over each individual member state's share of the EU-wide reduction target, as well as Britain's vote to leave the EU might delay the Paris pact.