Original sentence: Historically the Secretary of State for the Colonies and the Colonial Office were responsible for overseeing all British Colonies, but today the Foreign and Commonwealth Office (FCO) has the responsibility of looking after the interests of all overseas territories except the Sovereign Base Areas of Akrotiri and Dhekelia, which comes under the jurisdiction of the Ministry of Defence
Edited sentence: Due to the impossibility of a "head of state" maintaining a permanent residence in or "sovereignty over" multiple states simultaneously and the inevitable "absence" from at least one at all times, historically the Secretary of State for the Colonies and the Colonial Office were responsible for overseeing all British Colonies, but today the Foreign and Commonwealth Office (FCO) has the responsibility of looking after the interests of all overseas territories except the Sovereign Base Areas of Akrotiri and Dhekelia, which comes under the jurisdiction of the Ministry of Defence.Effectively leaving the territories without a "head of state" and under the "government foreign military "junta" and the "protection" of a  "sovereign country" which relies entirely on "allies" for its own "self-defense" during actual military engagements "abroad"