It’s on: despite a cyberattack on their website just hours ago, WikiLeaks has published more than 250,000 classified diplomatic cables from American embassies around the globe. In major newspapers, there’s now talk about a worldwide diplomatic crisis.

What’s in it is, well, huge and encompassing, with lots and lots of information on countless international matters.

The Guardian:

The United States was catapulted into a worldwide diplomatic crisis today, with the leaking to the Guardian and other international media of more than 250,000 classified cables from its embassies, many sent as recently as February this year.

At the start of a series of daily extracts from the US embassy cables – many of which are designated “secret” – the Guardian can disclose that Arab leaders are privately urging an air strike on Iran and that US officials have been instructed to spy on the UN’s leadership.

These two revelations alone would be likely to reverberate around the world. But the secret dispatches which were obtained by WikiLeaks, the whistlebowers’ website, also reveal Washington’s evaluation of many other highly sensitive international issues.

These include a major shift in relations between China and North Korea, Pakistan’s growing instability and details of clandestine US efforts to combat al-Qaida in Yemen.

Among scores of other disclosures that are likely to cause uproar, the cables detail:

• Grave fears in Washington and London over the security of Pakistan’s nuclear weapons programme

• Alleged links between the Russian government and organised crime.

• Devastating criticism of the UK’s military operations in Afghanistan.

• Claims of inappropriate behaviour by a member of the British royal family.

The US has particularly intimate dealings with Britain, and some of the dispatches from the London embassy in Grosvenor Square will make uncomfortable reading in Whitehall and Westminster. They range from serious political criticisms of David Cameron to requests for specific intelligence about individual MPs.

The cache of cables contains specific allegations of corruption and against foreign leaders, as well as harsh criticism by US embassy staff of their host governments, from tiny islands in the Caribbean to China and Russia.

The material includes a reference to Vladimir Putin as an “alpha-dog”, Hamid Karzai as being “driven by paranoia” and Angela Merkel allegedly “avoids risk and is rarely creative”. There is also a comparison between Mahmoud Ahmadinejad and Adolf Hitler.

The cables name countries involved in financing terror groups, and describe a near “environmental disaster” last year over a rogue shipment of enriched uranium. They disclose technical details of secret US-Russian nuclear missile negotiations in Geneva, and include a profile of Libyan leader Muammar Gaddafi, who they say is accompanied everywhere by a “voluptuous blonde” Ukrainian nurse.

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The electronic archive of embassy dispatches from around the world was allegedly downloaded by a US soldier earlier this year and passed to WikiLeaks. Assange made them available to the Guardian and four other newspapers: the New York Times, Der Spiegel in Germany, Le Monde in France and El País in Spain. All five plan to publish extracts from the most significant cables, but have decided neither to “dump” the entire dataset into the public domain, nor to publish names that would endanger innocent individuals. WikiLeaks says that, contrary to the state department’s fears, it also initially intends to post only limited cable extracts, and to redact identities.

The cables published today reveal how the US uses its embassies as part of a global espionage network, with diplomats tasked to obtain not just information from the people they meet, but personal details, such as frequent flyer numbers, credit card details and even DNA material.

Classified “human intelligence directives” issued in the name of Hillary Clinton or her predecessor, Condoleeza Rice, instruct officials to gather information on military installations, weapons markings, vehicle details of political leaders as well as iris scans, fingerprints and DNA.

The most controversial target was the leadership of the United Nations. That directive requested the specification of telecoms and IT systems used by top UN officials and their staff and details of “private VIP networks used for official communication, to include upgrades, security measures, passwords, personal encryption keys”.

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They are classified at various levels up to “SECRET NOFORN” [no foreigners]. More than 11,000 are marked secret, while around 9,000 of the cables are marked noforn. The embassies which sent most cables were Ankara, Baghdad, Amman, Kuwait and Tokyo.