Which member state of SAARC is a monarchy?

Which member state of SAARC is a monarchy?

سارک کی کون سی رکن ریاست بادشاہت ہے؟
Explanation

Bhutan is a member state of SAARC (South Asian Association for Regional Cooperation) and a monarchy.

It's with the House of Wangchuck having ruled the country since 1907.

The current monarch is King Jigme Singye Wangchuck.