The Prince of Wales "has got a point" when he draws comparisons between Russian president Vladimir Putin and Adolf Hitler, Labour leader Ed Miliband has said.
Mr Miliband said that many Britons "shared the Prince's concerns about President Putin's actions in Ukraine", which were reportedly voiced in a private conversation with a member of the public during his tour of Canada.
Dr Andrew Blick, a lecturer in politics at King's College, London, has said that it was a bad idea constitutionally for the Prince to make controversial political pronouncements, saying he is "supposed to be politically neutral."
Speaking of the royal reportedly comparing Vladimir Putin to Hitler he said:
They are not directly elected like modern presidents and the strength of the system, the justification for having a hereditary head of state is having someone who is not part of the political system.
They are not supposed to go around upsetting other countries, whether or not he may be right or wrong.
It is not like he is 18 years old and he is going to grow out of this, he is probably pretty much set in his ways.
I imagine it is going to be very hard for him to stop doing it, that would be my guess.
Nigel Farage has suggested Prince Charles should not steer clear of diplomatic relations with Russia after the royal reportedly compared Vladimir Putin to Hitler.
"I'm a great supporter of the royal family, I really am. But we live in a constitutional monarchy and we have an elected government," he told said.
"Sometimes there are issues that it might be better if elected governments dealt with."
Prince Charles' reported comments about Vladimir Putin have thrown him into the centre of a political row - but not for the first time.Read the full story ›
Clarence House has suggested Prince Charles' reported comments on Russian President Vladimir Putin were not intended to be made public.
We do not comment on private conversations. But we would like to stress that the Prince of Wales would not seek to make a public political statement during a private conversation.
Deputy Prime Minister Nick Clegg has defended the Prince of Wales' right to "express himself" in the wake of his reported controversial comments about Russian President Vladimir Putin.
"I have never been of this view that if you are a member of the royal family somehow you have to enter into some Trappist vow of silence," he told BBC Breakfast.
"I think he is entitled to his views. But I don't know whether those were his views because I just don't think providing a running commentary on what were private conversations is useful to anybody," Clegg said.
Labour MP Mike Gapes has criticised the Prince of Wales, following allegations that he compared Putin to Hitler whilst on an official tour of Canada.
If Prince Charles wants to make controversial statements on national or international issues he should abdicate and stand for election
In constitutional monarchy policy and diplomacy should be conducted by parliament and government. Monarchy should be seen and not heard.
A woman who fled Nazis said she was surprised the Prince of Wales compared Russian leader Vladimir Putin to Adolf Hitler, the Daily Mail reports.
Jewish museum volunteer Marienne Ferguson told the Prince she fled to Canada with her family shortly before the Nazis annexed the Baltic coastal Free City of Gdansk in 1939.
After meeting Charles, 78-year-old Mrs Ferguson said:
The Prince said, 'And now Putin is doing just about the same as Hitler'.
I must say that I agree with him and am sure a lot of people do.
But I was very surprised that he made the comment as I know they (members of the Royal Family) aren't meant to say these things.
I told the Prince that while my family and I were lucky to get a permit to travel, many members of my relatives had permits but were unable to get out before the war broke out on September 1. They were sent to the concentration camps and died.
The Prince of Wales has compared the actions of Russian leader Vladimir Putin to Adolf Hitler, it has been claimed.
The alleged comparison was made during his tour of Canada when he spoke to a woman who fled the Nazis and lost family members in Holocaust.
Charles and Camilla were greeted with flowers from two young fans as they stepped off the plane in Halifax, Nova Scotia, for their four-day tour of Canada.
After stepping off the plane, the Duchess, wearing a cream silk dress and golden black tweed coat, smiled as she was presented with flowers by Grace Elizabeth Lenihan, aged three, and her nine-year-old sister Molly Jane.
Camilla, who was carrying a black clutch bag given to her by a Canadian friend, told the young girls they looked "pretty" as she collected the gift.