Re: United Kingdom threatens to storm Ecuador embassy in order to arrest Julian Assan
The "bitterness" is that the UK has, in diplomatic language, suggested it could revoke the Ecuador embassy's status in order to enter the premises and fulfil the arrest warrant. This is not the oh-so-dramatic "storming the embassy" rhetoric that was put out, and any such intention would be legally challenged and end up in lengthy litigation as the UK's 1987 act went up against relevant international law.
However it does represent an escalation of the situation, and one which could see the sanctity of diplomatic missions in troublespots around the world put under increasing threat. It would be a very dangerous move on the UK's part to try and enforce extradition in this manner.