How do new countries legally and without bloodshed declare themselves independent?

A recent example of peaceful secession is in 1991 when Eritrea became independent from Ethiopia. I say peaceful, but this was at the end of a long civil war when up to 1.4 million people died. The victorious rebels who took over the government were allied to the Eritrean independence movement and they quickly recognised their allies' wishes. Sadly a border war with Ethiopia seven years later cost up to another 300,000 lives.

Nonetheless, it was, technically, a peaceful seccession as the split itself didn't involve a war.

I think there are three major ways of gaining independence now.

• Any non-self-governing territory (colony) has legal right for independence according the United Nations. Non-self-governing means not represented in central government.

• Dissolution of a union state or federation. Upon dissolution the constituent parts become independent

• Secessionism. Usially seceding territory gains full international recognition only if the secession recognized by the government of the country from which the territory secedes. Secessions often accompanied by wars.

To put it more simply:

When a new nation declares its independence from a nation of which it was formerly a part, there will be bloodshed if and only if the parent nation is able and willing to impose bloodshed.

Slovakia seceded peacefully because the Czechoslovakian government permitted it. The US had to fight against Britain because Britain did not permit the US to secede peacefully.

(The parent nation's ability and willingness to fight may be affected by the actions of other interested nations.)

The least bloodshed occurs when the stronger country is willing to grant independence without a fight. As between the Czech Republic and Slovakia, when Slovakia wanted to leave, "the feeling was mutual" on the Czech side. Some divorces are "amicable."

Britain granted independence to far away Australia early in the 20th century. It had previous experiences doing so with Canada, peacefully, and the United States, after a long war. In the case of Australia and Canada, it probably helped that most people were of "British" stock who could argue for independence using British sensibilities.

The worst situations are those in which the party that is being left feels it has something to lose. This feeling may be aggravated by the fact that one group of people feels that it is "better" than the other. This may have been the case with former Yugoslavians, or Britain and India, for instance.

There is no formal process by which one country would declare its independence from another country. However, the most common form has been to simply declare your intentions to operate as an independent entity and then hope that the international community will recognize your claim.

Historically, this has been done by a number of countries. In South America, Brazil used to be a colony of Portugal until the Brazilians declared heir independence in 1822. Portugal rattled their sabres but ultimately came to a diplomatic agreement in exchange for compensation. Guyana gained independence from the UK in 1966 after becoming a repoublic. They now remain as a member of the Commonwealth of Nations.

In West Africa, the Republic of Guinea declared their independence from France in 1958. The French didn't have the means or desire to oppose it, so they were able to establish their own country.

There are no doubt other examples, but the main point is that it usually came about simply by one country declaring their independence. From there, it is a combination of things that determine their success. Primarily, there is the willingness of the "mother country" to acknowledge and accept this declaration, and secondly there is the willingness of other countries in the international community to recognize it.

Re: Is there a way for countries to become legally independent without the bloodshed?

Montenegro's recent split from Serbia would be a good point to start. Very recent and very peaceful.

After Yugoslavia broke up in 1991, the republics of Serbia and Montenegro established a federation called the Federal Republic of Yugoslavia (FRY). They established a new constitution in 1992. This new constitution abandoned the collective presidency of the former SFRY (aka former Yugoslavia) and replaced it with the system consisting of a single president, who was initially appointed with the consent of the republics of Serbia and Montenegro until 1997 after which the president was democratically elected.

From 1996, the first public signs of political discord between parts of Montenegrin leadership and the Serbian leadership began to appear. By 1998, Montenegro undertook a different economic policy by adopting the Deutsche Mark as its currency.

During autumn 1999, following the Kosovo War and the NATO bombing campaign, Montenegrin Prime Minister Milo Đukanović drafted a document called Platforma za redefiniciju odnosa Crne Gore i Srbije (A platform for redefinition of relations within the Federal Republic of Yugoslavia) calling for major changes in the division of governing responsibilities within FR Yugoslavia. FRY Pesident Slobodan Milošević did not respond to the platform, considering it unconstitutional.

However, by October 2000 Milošević had lost power in Serbia. Contrary to expectation, Đukanović's response to the power change in Belgrade was not to further push the agenda outlined in his platform, but instead to suddenly start pushing for full independence. Subsequent governments of Montenegro carried out pro-independence policies.

On 4 February 2003, the federal parliament of Yugoslavia created a loose state union - State Union of Serbia and Montenegro. A new Constitutional Charter was agreed to provide a framework for the governance of the country.

The process of secession was regulated by that Constitutional Charter. Article 60 of the constitution required that a minimum of three years pass after its ratification before one of the member states could declare independence. The same article specified the referendum as necessary for this move. However, this constitution allowed member states to define their own referendum laws.

An independence referendum was held in Montenegro on 21 May 2006. It was approved by 55.5% of voters, narrowly passing the 55% threshold. By 23 May, preliminary referendum results were recognized by all five permanent members of the United Nations Security Council, indicating widespread international recognition of Montenegro once independence would be formally declared. The Assembly of the Republic of Montenegro made a formal Declaration of Independence on Saturday 3 June 2006. Serbian president Boris Tadić accepted the results of the referendum in favor of independence.