Turkmenistan passed constitutional changes to prolong the presidential term of office.
Tajikistan is to hold a referendum in May that is expected to let President Emomali Rakhmon stay in office.
Turkish President Recep Tayyip Erdogan called for a new constitution that would give him greater powers, heightening opposition fears over authoritarian rule.
On the eve of the Constitution Day in Kazakhstan, President Nazarbayev commented on accusations of autocracy.
Turkish President Recep Tayyip Erdogan on Friday defiantly vowed to renew his drive for a new presidency-based constitution.
Kazakhstanis will be resting for three days on the Constitution Day this year.
Nepali politicians including Prime Minister Sushil Koirala appealed for calm as hundreds protested against a new constitution for a second day.
With the inauguration of Nursultan Nazarbayev, the government of Kazakhstan resigns according to the Constitution.
US President Barack Obama urged Congolese President Joseph Kabila to respect the Democratic Republic of Congo's constitution.
Kazakhstan is on its way to ratify the UN Convention on the Rights of Persons with Disabilities as part of the move to eliminate discrimination against the disabled.
President of Kazakhstan Nursultan Nazarbayev spoke about five institutional reforms he envisions for Kazakhstan that would ensure its move towards a developed and harmonious society.
The Senate has requested the Constitutional Council of Kazakhstan to provide an official interpretation of the Article 41 of the Constitution on early presidential elections.
China marked its first national Constitution Day with readings at schools across the country, activities promoting the rule of law, and the blocking of protests at Tiananmen Square.
Penal Reform International believes Kazakhstan should abolish the death penalty completely, even though there is a moratorium on capital punishment in the country.
Spain's Prime Minister Mariano Rajoy said he was open to proposals on reforming the country's constitution.
Foreign experts and politicians will put together a book on the Constitution of Kazakhstan.
Philippine President Benigno Aquino has said he may try to change the constitution and serve a second term in office.
President Jacob Zuma led celebrations Sunday on the 20th anniversary of post-apartheid democracy in South Africa, insisting it is closer to its dream of a multi-racial nation despite stubborn inequality, poverty and corruption.
The Philippine Supreme Court ruled Tuesday that a controversial cybercrime law penalising online libel is constitutional, amid claims it is intended to curb Internet freedom in one of Asia's most freewheeling democracies.
US Senator Rand Paul filed suit against President Barack Obama and other officials in a bid to end the secret program that scoops up telephone data on virtually all Americans.