Name the European country with the largest population.
The European country with the largest population is Russia. Its population is estimated to be approximately 144.5 million as of 2021.
Complete the following task based on the instruction and optional input provided.### Instruction:
Name the European country with the largest population.

### Output:
The European country with the largest population is Russia. Its population is estimated to be approximately 144.5 million as of 2021.