The tax "on its own is unlikely to make Wales uncompetitive", he said, but added the government "need to be cautious about how much more difficult and expensive all of this makes it to operate as an accommodation provider in Wales".
Originally the Channel Islands representative for the International Holocaust Remembrance Alliance,after comments she made during a seminar.
Dr Carr said they used archives "from across mainland Europe, Israel, Moscow and Ukraine" to inform their findings.She said an unprecedented amount of evidence combined with "decades of experience" had resulted in their "completion of the task".Dr Carr added: "We calculated and worked out the number of dead and the number of labourers."
She said the number was "a lot higher" than the official figure of old.Dr Carr said a lot of alternative theories had been "floated over the last couple of years".
She said these included "grossly-inflated numbers" unsupported by evidence.
"It's important to find out the answer to the question because this has been a subject so distorted over the last few years and highjacked by people with different agendas so it's just really important to find out the truth for their sake and in memory of the dead.Iran expressed a hope for "the swift end of military conflicts, the prevention of terrorist actions, and the commencement of national dialogue" with all parts of Syrian society.
Turkey said Syria was now at a stage "where the Syrian people will shape the future of their own country". Foreign Minister Hakan Fidan said the new government "must be established in an orderly manner" and warned that "the principle of inclusiveness must never be compromised".US President Joe Biden said the collapse of the Assad government was a "fundamental act of justice" after decades of repression, but cautioned that the takeover by Islamist rebels created a moment of "risk and uncertainty".
Israel's Prime Minister Benjamin Netanyahu said the collapse of the Assad government was the "direct result" of his country's action against Hezbollah and Iran.Iraq, where powerful Iran-backed militias sent fighters to support the Syrian military in the civil war, said it supported efforts to open a dialogue in Syria "leading to the adoption of a pluralistic constitution that preserves the human and civil rights of Syrians".