What was INSTEX, established 31 January 2019, designed to ease?

Question

What free trade area that came into effect on 1 January 2010 was the largest at the time in terms of population and third largest in terms of volume?

Answer 1

Trade
Belgium, Denmark, Finland, the Netherlands, Norway and Sweden issued a joint statement announcing becoming shareholders of INSTEX (Instrument in Support of Trade Exchanges) designed by the remaining signatories to the JCPOA (Joint Comprehensive Plan of Action) to circumvent biting US sanctions on trade with Iran after the US pulled out of the JCPOA in 2015.