Countries opposed to an EU law forcing the world’s airlines to pay for carbon emissions have agreed on a basket of retaliatory measures but will leave it up to each country to choose among them, Russia’s deputy transport minister said on Wednesday. “Each country has the options of barring its airlines from participating in the European Union's carbon scheme, lodging a formal complaint with the UN’s International Civil Aviation Organisation (ICAO), ceasing talks with European carriers on new routes and imposing retaliatory levies on EU airlines.