By Gerard Wynn LONDON, Feb 21 (Reuters) - Once rhetoric surrounding a brewing "carbon trade war" has cooled, non-EU countries are likely accept charges against carbon emissions on their flights arriving in and departing from the European Union. Opposed countries including the United States, China and India are meeting in Moscow this week, disgruntled over the perceived injustices of the EU scheme which applies a charge on the entire carbon emissions of flights including those parts outside EU airspace.