No. Security Groups require either a CIDR range or the ID of another Security Group.
If you wish to restrict access to your application (web traffic) to a particular country, you could use Amazon CloudFront and Restrict the Geographic Distribution of Your Content.
However, this will not work for SSH (which is shown in your picture). It is advisable that you restrict SSH/RDP access to the absolute minimum, such as one IP address. It would not be a good idea to open SSH to an entire country.