The mayor and the town mobilised their defences, including a local militia, but the rebels never arrived.
Richard also rebuilt the town's wider defences, including a new stone bridge over the River Taff guarded by the West Gate, finishing the work by 1451.
After the destruction of the castle by rebels and a Viking army in 1069, York Castle was rebuilt and reinforced with extensive water defences, including a moat and an artificial lake.
However, its oval shaped summit was flat and open, and its 70 year old defences, including an old fort built by the Swedish king Gustavus Adolphus during the Thirty Years' War, were neglected and in a dilapidated state.
11.20am: Debate on defence, including a vote on whether to abandon the nuclear deterrent.
Some have leapt to Zhao's defence, including a YouTube commenter who wrote: "[You can't] accuse others of plagiarism without having any proof.
The extradition hearing for Dotcom and three of his New-Zealand-based colleagues has been delayed repeatedly amid protracted court battles, which have seen a series of victories for his defence, including a finding that search warrants were invalid, that the search was illegally conducted, and that the FBI should return cloned data.
Such chemical defences include bioactive proteins and secondary metabolites that can be either constitutive or inducible as a result of wounding by herbivores or invasion by pathogens.
(6) Other host defences include nutritional immunity, ROS/RNS production, and antimicrobial peptides.
The non-enzymatic defences include ascorbate (vitamin C) and α-tocopherol (vitamin E).
Drosophila immune defences include physical barriers, homeostatic factors and local and systemic immune responses.
