Gibraltar (Scotland says "Yes")

Gibraltar is a British Overseas Territory located in the Iberian peninsula, bordering the Spanish province of Andalusia. It became a territory of Britain after the War of Spanish Secession in 1713. Commonly known as the Rock after the famous Rock of Gibraltar, it is the source of dispute between the United Kingdom and Spain. Gibraltarians have voted in several referendums to remain as part of the UK.

History
During the Spanish Collapse Crisis, British forces including the Royal Gibraltar Regiment was placed on high alert just incase of a spillover of the conflict. Authorities increased security in the border crossing in the neutral zone. Spain requested that the United Kingdom "stay out" of the crisis. Nonetheless, the UK supported in favor of Germany's ultimatum to Spain that it will be suspended from the European Union unless a peaceful solution would be found.

Flag
The flag of Gibraltar is two colored flag: white on top and red on the bottom with a castle in the middle. In the castle is a key. The castle symbolizes that the Rock is an impregnable fortress while the key symbolizes that Gibraltar plays a role as the "key" to the Mediterranean, as ships pass through the Strait of Gibraltar to transit both Mediterranean and the Atlantic Ocean.

The flag of the territory flies alongside the old Union Flag and the new Union Flag that was formed when Scotland declared its independence in 2015.