UPDATE 2-British court quashes legal challenge by partner of Snowden leaks reporter
* Journalist Greenwald's partner to appeal court decision
* Judge says detention was legitimate, criticises Greenwald
* Greenwald accuses Britain of "waging war" on press
By Costas Pitas
LONDON, Feb 19 (Reuters) - Britain's High Court has quashed a legal challenge against the detention under anti-terrorism laws of the partner of Glenn Greenwald, the journalist who brought leaks from former U.S. spy agency contractor Edward Snowden to world attention.
David Miranda had asked the court to rule on the legality of his detention and nine-hour questioning under terrorism legislation last August when he landed at London's Heathrow Airport en route from Berlin to Rio De Janeiro, Brazil.
He had argued that such detentions would have "an inevitable chilling effect on journalistic expression".
British authorities seized items from Miranda which they said included electronic media containing 58,000 documents from the U.S. National Security Agency (NSA), Snowden's former employer, and from its British counterpart, Government Communications Headquarters (GCHQ).
The High Court ruled on Wednesday that the detention of the partner of the ex-Guardian newspaper journalist was lawful and that anti-terrorism laws were correctly used. Continuación...