The idea of a captain of an atomic submarine declaring independent sovereignty is not completely original.
In the first declaration, Hobson declared British sovereignty over the North Island.
The document was significant as it was the first time that a Russian state had declared sovereignty over its airspace.
Although Egypt declared sovereignty over Taba last month, it has remained under Israeli control.
The state of Yucatán had seceded from the federation, Michoacán declared sovereignty, and many other states were ignoring the federal government.
Shall they at last declare full sovereignty?
Independence 1990 - Communist Party of Uzbekistan declares economic and political sovereignty.
"If we try to undo Canada and declare sovereignty, the cost of doing so could be quite high."
Re-established on 12 February 1991, and on 4 September of that year declared sovereignty.
Its Parliament has declared sovereignty from Moscow and claims the right to overrule national laws.