Myanmar (Burma) opposition leader Aung San Suu Kyi says "urgent" constitutional changes are necessary to make her country more democratic ahead of elections in 2015.
Suu Kyi - who spent 15 years under house arrest from 1989 until 2010 - has expressed hopes of becoming Myanmar's next president in the 2015 general election.
At present, the constitution effectively prevents her from doing so because she was married to a foreigner.
"The great majority of our people are convinced that, without amendments to the constitution, we can never be a truly democratic society," the 68-year-old said at a joint press conference with European Commission President Jose Manuel Barroso.
"I would like the world to be aware of this and to support the aspirations of our people," she said, adding that the process "cannot be put off until next year".
Suu Kyi is in Brussels at the start of a two-week visit to Europe.
The 2008 charter, pushed through by the junta that ruled during 1988-2010, contains numerous clauses considered undemocratic, such as a stipulation that 25 per cent of parliamentary seats be held by appointees of the military.
Ethnic minority groups widely opposed the constitution because it denied them any autonomy in their home territories.
"Unless the rule of law has been established, people will not feel that justice has been done to them," Suu Kyi said. "Until they can believe that they are the equal of everybody else in the land, nobody can be at peace."
"The EU is very well aware ... that the way to democratisation is still incomplete and that more needs to be done," Barroso said, adding that the bloc was being "extremely vigilant" in following such developments.
He said the EU would work with the Myanmar authorities to ensure that the 2015 polls are credible, transparent and inclusive, and said the bloc could offer an election observer mission.Suu Kyi left Yangon on Friday and will be in Europe until November 2. Her visit includes stops in Luxembourg, France, Britain and Italy.