This timeline deals with events from June-August 2013.
Useful Link: http://en.wikipedia.org/wiki/Edward_snowden
Edward Snowden, a former Central Intelligence Agency technical worker, is the wellspring of one of the worst info leaks in US history. Materials supplied by Mr Snowden for the media allege the US has conducted widespread and illegal surveillance of its own citizens and other states. The BBC looks at the way the relationship has developed since it broke in June.
6 June 2013: Guardian journalist Glenn Greenwald reports the US National Security Agency (NSA) is accumulating the phone records of millions of Verizon customers beneath a top secret court order giving the government unlimited ability to get communications data for a span.
7 June: The Washington Post report and Guardian the NSA is gathering data under a previously undisclosed surveillance programme called Prism, and obtaining the systems of US internet giants including Facebook and Google. The programme enables officials to accumulate material including live chats, emails and search histories.
8 June: US President Barack Obama says the government surveillance programmes reach “the right balance” between security and privacy and are closely supervised by Congress and also the courts.
Snowden named and in Hong Kong
9 June: Edward Snowden, 29, is named as the origin of the intelligence leaks. Speaking from Hong Kong, he describes why he went public.
10 June: Mr Snowden checks out of his Hong Kong hotel and his whereabouts remain unknown since it’s rumoured the US is pursuing a criminal investigation against him.
11 June: The EU demands US assurances that Europeans’ rights aren’t being infringed by the just-revealed surveillance programmes. Mr Snowden’s company, defence contractor Booz Allen Hamilton, says it has fired the infrastructure analyst for breaking its ethics code.
12 June: Mr Snowden tells the South China Morning Post from a secret place in Hong Kong that he’ll fight any effort to extradite him. The Speaker of the US House of Representatives John Boehner describes him as a traitor. British citizens their intelligence agencies and the UK guarantees US are functioning within the law.
13 June: Mr Snowden says the US government is hacking computers in mainland China and Hong Kong for years. NSA Director Keith Alexander tells the US Senate that surveillance programmes have interrupted dozens of terror plots.
14 June: FBI Director Robert Mueller says Mr Snowden has caused the US “considerable damage” and tells Congress the US will hunt him down and prosecute him.
15 June: Hundreds of protesters march to the US consulate in Hong Kong, demanding local authorities protect Mr Snowden.
17 June: Mr Snowden denies he is a Chinese agent and says US officials, in labelling him a traitor, have ruined any chance of the fair trial.
18 June: Mr Snowden’s dad, Lon, issues a public plea urging his son not to commit “treason”.
19 June: NSA Director Alexander tells the surveillance programmes to the US House intelligence committee leaked by Mr Snowden helped thwart 50 strikes since 2001.
From Hong Kong to Moscow
20 June: Wikileaks creator Julian Assange tries to broker a deal to allow asylum to Mr Snowden in Iceland.
22 June: US prosecutors file a criminal charge, charging Mr Snowden with larceny and espionage. His extradition is requested by the White House from Hong Kong.
23 June: as extradition pressure builds Mr Snowden flies from Hong Kong to Moscow. Ecuador’s foreign minister confirms on Twitter that Mr Snowden has requested asylum there. Ecuador sheltered Mr Assange in its London embassy for the previous year, and has has an extradition treaty with all the US but allows for political asylum exemptions.
24 June: White House spokesman Jay Carney urges Russia to return Mr Snowden, and says the fashion of his own departure from Hong Kong would “unquestionably affect” on US relations with China.
June Vladimir Putin, right, and Barack Obama in Northern Ireland, June 2013 Relationships between the USA and Russia were already anxious on 17
25 June: China describes US accusations that it facilitated the departure of Mr Snowden from Hong Kong as “groundless and unacceptable”. Russian President Vladimir Putin confirms Mr Snowden is really in the transit region of Moscow’s Sheremetyevo airport and stays a free guy. US Secretary of State John Kerry requests Russia transfer the “fugitive of justice” to the Usa.
27 June: Ecuador warns it could take weeks to rule on Mr Snowden’s asylum bid.
28 June: Mr Snowden’s dad, Lon, ask US Attorney General Eric Holder for “ironclad assurances” his son’s rights will probably be protected should he return for the US.
29-30 June: Germany’s Der Spiegel magazine says it has seen a secret file supplied by Mr Snowden showing the US bugged EU offices in Washington and at UN headquarters in Big Apple. European officials demand “complete clarification” from the US.
Snowden’s bids for asylum
Edward Snowden at Sheremetyevo Airport in Moscow (12 July 2013) July Edward Snowden is seen for the very first time in three weeks on 12
1 July: Mr Snowden applies to Russia for political asylum; President Putin says he should stop leaking US secrets if he wants to remain. President Obama recognizes “high level” discussions with Moscow on extradition.
2 July: Mr Snowden withdraws his asylum request to Russia and sends requests to 20 other states, according to Wikileaks.
3-5 July: Bolivian President Evo Morales’ plane is redirected to Austria amid suspicion that Mr Snowden is on board. President Morales threatens to shut the US embassy in Bolivia in response.
6 July: Nicaragua and Venezuela offer Mr Snowden asylum.
12 July: Mr Snowden emerges at Sheremetyevo airport for the very first time in three weeks, saying as he was not able to travel to Latin America he sought asylum in Russia.
Glenn Greenwald and David Miranda embrace inside an airport Glenn Greenwald greets Mr Miranda August as he arrives in Brazil on 19
1 August: Mr Snowden leaves the airport and enters Russian land after trying to get temporary asylum. The US says Russia’s conclusion is “incredibly unsatisfactory”.
7-9 August: President Obama cancels a meeting with Russian President Putin following Russia’s asylum determination. He promises “proper reforms” to ensure greater supervision of US surveillance programmes.
16 August: Citing documents leaked by Mr Snowden, the Washington Post reports the NSA broke privacy rules and overstepped its legal authority a large number of times in the previous couple of years.
19-20 August: Mr Greenwald’s associate, David Miranda, is detained under terror laws at London’s Heathrow airport for nine hours on his way to Rio de Janeiro. The citizen allegedly has his mobile phone, notebook, DVDs and other things seized. UK politicians demand an explanation. The US denies involvement but recognizes it was given a “heads up” from British officials concerning the detention.