Regno Unito, overseas defense that makes water
For the first time in the history of British military defense, the United Kingdom has, to date, any ship on a mission abroad.
You can define "unprecedented” the absence of British ships in international waters. This was announced to the newspaper "The Times", who reported the statement by a senior officer quoted under anonymity: "It's a strategic embarrassment for the country and its armed forces", He said the military.
Source: Defense Online