You don’t know which country, its random.
You cannot leave this island, you cannot end your life, you cannot abdicate your position.
Your country is immune from military attacks for 10 years, its literally impossible. There’s a magic force field protecting the entire island and the entire airspace up to 41,000 ft (max civillian flight level) and 12 nautical miles sorrounding the island. Enemy military are unable to enter.
You cannot get kidnapped or killed or like fall into a coma, or anything of the sort, you have plot armor for these 10 years. Any assassination attempts will magically fail.
Your population does not have plot armor they can die.
The enemy can send spies.
You get to choose the location of your island at the start. Things spawn in, and has a random amount of development of an average developing country, history, culture is randomly filled in and backdated. Everyone speaks your most fluent language and is literate.
You have zero nukes.
I become an intel broker.
Create the most vast espionage network ever conceived of and use my and my country’s so-called plot armor to avoid any potential consequences. I will use my network to infiltrate those governments to the highest possible levels, collecting intel on every program they have. I then create an indispensable, worldwide intel marketplace where these rival nation can acquire whatever info they need about each other. As insurance, I make it so that, if invaded, this intel marketplace instantly vanishes, and the identities of all rival nation agents are made public.
This may not guarantee my country’s survival, but it will guarantee that whoever attacks me will get their asses handed to them by those other nine nations.