The decision is a victory
 for 
Assange, who is trying to avoid being extradited to Sweden and has 
been holed up inside Ecuador's embassy in London for nearly two months.
But the bad news for Assange is that British police have refused to grant him safe passage out of the country.
The British government 
has pledged to send Assange to Sweden to face questioning on sex crimes 
charges, but Ecuador's foreign minister says if Assange is sent to 
Sweden, he could then be extradited to the United States to face charges
 of espionage or treason.
Assange and his 
supporters say a U.S. grand jury is weighing charges against him. U.S. 
Attorney General Eric Holder has said that the Justice Department has an
 "active, ongoing criminal investigation" into the WikiLeaks disclosure 
of classified U.S. diplomatic documents.
CNN: Can Assange leave London?
Paul Whiteway:
 The fact Ecuador has granted political asylum to Assange doesn't 
actually make any real difference. Clearly he is not in Ecuador, he is 
in the Ecuadorian embassy in London, and for the time being he is able 
to remain there without being arrested. But he can't get to Ecuador 
without leaving the embassy without being arrested, so in a sense, it's a
 standoff.
CNN: Could Assange escape by car or by plane?
Whiteway:
 It's very unlikely. The embassy only occupies a part of the building, 
and is not a compound embassy, which has a car park inside it. Vehicles 
belonging to the embassy enjoy a degree of immunity, so if it was a 
compound embassy, he could get into the car, which could in theory take 
him out of the building.
But at some point it 
would have to stop, and he would have to get out of the car and into an 
airplane, whereupon he would be arrested. But Ecuador's is not a 
compound embassy, so as soon as he steps out the door he is liable to be
 arrested.
Immunity would in theory
 apply to an Ecuadorian airplane, but that plane would have to have 
permission to land that the British government would not give. It's 
really hard to see how that could work.
Also, that sort of 
subterfuge would be regarded as such a blatant disregarding of the 
convention on diplomatic relations that the bilateral relationship 
between Britain and Ecuador would mean even further damage to Ecuador's 
interests in the UK.
CNN: Is there anything British police can do?
Whiteway: All
 they can do is wait and watch. In theory the foreign secretary could 
make use of a 1987 act of Parliament to end to the inviolability of the 
Ecuadorian embassy, but this would take authorities into a gray area.
Theoretically, this 
legislation is to be invoked in cases connected to public safety, 
national security, or town and country planning. Clearly Assange fits 
into none of those categories, and it's unlikely the British police will
 be going into the embassy anytime soon.
CNN: Is there a precedent for marching into another country's embassy?
Whiteway:
 While authorities could theoretically test the 1987 law, I can't think 
of any instance in this country where a government entered the premises 
of a mission (embassy) without permission from the head of the mission.
The reasons for that are
 clear: Britain doesn't want to have itself in a situation where foreign
 governments can just march into its embassies overseas and arrest 
people. Diplomatic relations are established on the basis of 
reciprocity, and that is very important.
CNN: How have Britain and Ecuador handled the Assange issue?
Whiteway:
 In Britain, I suspect that in the Foreign Office there may be a slight 
sense of regret that they included a paragraph in their letter (to 
Ecuador) about the 1987 law (informing officials they had the legal 
wherewithal to enter the embassy and take Assange), because clearly it 
stung the Ecuadorians in a way.
But I think it was 
always going to be a long haul to get this issue resolved, given that 
President Rafael Correa is quite sympathetic to what Julian Assange 
stands for; given that he had already been on the record publicly saying
 he was in favour of granting Assange asylum. It was always going to be 
difficult for him to walk away from that without losing face.
CNN: Can Assange stay in the embassy forever?
Whiteway: I
 don't think Mr. Assange is going to be going anywhere, let alone 
Ecuador, for the time being. There was the case in Hungary of the bishop who sought refuge in the U.S. embassy for 15 years, so some cases can take literally years to resolve.
CNN: What will the atmosphere be like in the embassy?
Whiteway: I'm
 sure they will have made him as comfortable as possible in the 
circumstances as they possible can. But it's a big distraction from 
their day job, and it's awkward having someone who's not on the 
diplomatic staff actually inside your embassy for any length of time, 
let alone for periods of months, so there is a price to pay from the 
embassy's point of view.