The truth of all this is any serious risk to that national security is extremely low. There may be 260,000 diplomatic cables. Will it embarrass diplomatic relationships? Sure, very likely—all to the good of our democratic functioning. The embarrassment would be awareness that the US is supporting and facilitating dictators and corrupt and murderous governments, and we are quite aware of their nature.
Don't doubt for a second that Assange isn't in MORTAL danger!
If the US secret Ops find Assange they will kill him or place him in a very VERY bad situation and then out him. Child Porn seems to be the governments favorite weapon. I can see the headline now...
FAKE---"Assange found with Child Porn on his laptop."--FAKE
Then the US government could sit back and watch Assange lose all his supporters and friends. Problem solved.
As a Sovereign Individual I support the rite of a free and unfettered press. If the US government is embarrassed then maybe the US government should conduct itself as if there was actually a document called a US Constitution set forth by it's Founders. Statesmen who knew that all authourity is dervied from ALMIGHTY GOD!!!