What country most recently joined NATO?
Finland is the most recent country to join NATO, formally becoming a member on 4 April 2023. It is the 31st country to join the North Atlantic Treaty Organization.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What country most recently joined NATO?
### Input: 
### Response: Finland is the most recent country to join NATO, formally becoming a member on 4 April 2023. It is the 31st country to join the North Atlantic Treaty Organization.