Euro Markets: EUAs rally from nine-day low to post small gain in response to Iran peace talks reports

European carbon rallied in the afternoon to post a small gain on Tuesday, after falling to its lowest in nine days as a weak auction outcome appeared to trigger heavy selling in a thin market, but positive news from the Middle East drove sharp falls in energy after midday boosted sentiment and set off a recovery that produced the EUA benchmark's first daily gain in more than a week.