Question: Who persuaded the king to revise the constitution?
About the article "Balkan Wars", section "Reaction in the Balkan States".

Candidate passages:
Serbia was frustrated in the north by Austria-Hungary's incorporation of Bosnia.
In March 1909, Serbia was forced to accept the annexation and restrain anti-Habsburg agitation by Serbian nationalists.
Instead, the Serbian government looked to formerly Serb territories in the south, notably "Old Serbia" (the Sanjak of Novi Pazar and the province of Kosovo).
On 15 August 1909 the Military League, a group of Greek officers, took action against the government to reform their country's national government and reorganize the army.
The League found itself unable to create a new political system, until the league summoned the Cretan politician Eleutherios Venizelos to Athens as its political adviser.
Venizelos persuaded the king to revise the constitution and asked the League to disband in favor of a National Assembly.
In March 1910 the Military League dissolved itself.
Bulgaria, which had secured Ottoman recognition of her independence in April 1909 and enjoyed the friendship of Russia, also looked to districts of Ottoman Thrace and Macedonia.
In August 1910 Montenegro followed Bulgaria's precedent by becoming a kingdom.
Following a military coup in 1972, in 1976 the military government formed three commissions to assist with the transition back to civil rule.
One group was to draft a new constitution, one was to revise the 1945 constitution, and one to create laws on political parties, local elections and the referendum. 
Under Article 114, the Commission is empowered to "conduct elections to the House of Representatives ("Dewan Rakyat", the lower house of Parliament) and the Legislative Assemblies of the States".
Under the Constitution of the independent Federation of Malaya, the Commission comprised one Chairman and two members, but after Malaya merged with Sabah, Sarawak and Singapore to form Malaysia, the Commission's membership was expanded by constitutional amendment to provide for an additional member from Sabah or Sarawak.
A 1981 amendment to the Constitution added another member and created the post of Deputy Chairman.
The Commission has the power to delimit constituencies, revise the electoral roll of registered voters, and regulate the manner in which elections are conducted.
Although the Constitution does not refer to the Commission as being a body independent from influence by the government or otherwise, constitutional scholars have generally considered the Constitution as intending to protect the independence of the Commission.
Among other things, commissioners are protected by tenure, and may only be removed through the same procedure as a judge of the Supreme Court.
The terms of remuneration of a commissioner cannot be altered to his disadvantage after he has been appointed.
Members of the Commission are appointed by the Yang di-Pertuan Agong (King), who must consult with the Conference of Rulers and appoint a Commission which has the confidence of the public.
Although the Constitution does not expressly require consultation with the Prime Minister in this regard, it has been argued that under Article 40 of the Constitution, the King cannot act on his own discretion unless explicitly stated; in all other cases, he must acquiesce to the advice of the Prime Minister, and as such the appointments to the Commission are made with the advice of the Prime Minister.
Members of the Commission retire at the age of 65. 
The Constitution of Belgium can be amended by the federal legislative power, which consists of the King (in practice, the Federal Government) and the Federal Parliament.
In order to amend the Constitution, the federal legislative power must declare the reasons to revise the Constitution in accordance with Article 195.
This is done by means of two so-called Declarations of Revision of the Constitution, one adopted by the Chamber of Representatives and the Senate, and one signed by the King and the Federal Government.
Following this declaration, the Federal Parliament is automatically dissolved and a new federal election must take place.
This makes it impossible to amend the Constitution unless an election has intervened.
Following the election, the new Federal Parliament can amend those articles that have been declared revisable.
Neither Chamber can consider amendments to the Constitution unless at least two-thirds of its members are present and the Constitution can only be amended if at least two-thirds of the votes cast are in favour of the amendment. 
Amending the Constitution has been a topic of much debate in contemporary Canada, and the two most comprehensive attempts to revise the document have both been defeated.
There have, however, been ten minor amendments to the Constitution since it was patriated in 1982.
Most of these amendments have been limited in scope, dealing with only specific provinces, and thus not subject to national debate.
None have been subjected to a national referendum.