The President of the Republic is the supreme commander of the national defence.
The Parliament has legislative power.
The Security Authorities Surveillance Select Committee exercises parliamentary supervision over the legality of the activities of security and surveillance agencies.
The Prime Minister is the chairman of the Security Committee of the Government of the Republic.
The Security Committee of the Government of the Republic co-ordinates the activities of security agencies and armed forces intelligence, analyses and assesses the security situation in the state, identifies the needs for national security related information and performs other tasks specified by the law or assigned by the Government of the Republic.
The Office of the Director of Security Co-ordination advises the Prime Minister on security matters and organises the activities of the Security Committee of the Government of the Republic.
The function of the Ministry of Foreign Affairs is planning, co-ordination and developing of foreign relations of the state.
The function of the Ministry of Finance is planning, co-ordination and execution of financial and fiscal policy of the state.
The function of the Ministry of Internal Affairs is safeguarding of internal security and maintenance of public order.
The function of the Ministry of Defence is organising of national defence.
The function of the Ministry of Justice is co-ordination of legislative drafting, systematisation of legislation and organising of the work of law enforcement authorities (courts of first and second instance, Prosecutor’s Office, notary offices etc.)
The aim of the export control of strategic goods is to ensure international security through supervision over the supplies of military and dual-use goods.
The statutory role of the Tax and Customs Board in the society is effective and precise administration of taxes, facilitation of business environment and protection of the society and economy.
The main functions of the Estonian Security Police are maintenance of constitutional order and territorial integrity, counterintelligence, protection of state secrets, counter-terrorism combat, anti-corruption combat and pre-trial proceedings of other criminal offences in the cases provided by the law.
The area of activity of the Police and Border Guard Board is managing and developing of the police, exercising of state supervision and applying of coercive measures as well as performance of tasks assigned to the police on the national level. The Police and Border Guard Board comprises the tasks of the criminal police, citizenship and migration, law enforcement police and border guard.
The area of activity of the Information Board covers maintenance of national security and constitutional order, conduct of counterintelligence activities outside the national territory (foreign intelligence) as well as organising and supervision over protection of state secrets on the basis of and pursuant to procedure established by the law.
The function of the Estonian National Security Authority is the receipt and protection of classified information of foreign states.
The Information Department of the Headquarters of the Estonian Defence Forces manages and organises military intelligence and security related activities in the Defence Forces and in the Defence League.
The Prosecutor’s Office participates in the planning of surveillance activities necessary for the prevention and detection of criminal offences; leads pre-trial criminal proceedings, ensuring lawfulness and performance thereof; represents public prosecution in court and performs other duties provided by the law.