Minister of Tourism and Culture Datuk Seri Mohamed Nazri Abdul Aziz has called former premier Tun Dr Mahathir Mohamad a man with no principles.

Commenting on Tun M's recent blog post where he defended the Conference of Rulers action's call to resolve the 1Malaysia Development Berhad (1MDB) issue immediately, Nazri said the former premier was the person who had reduced the Rulers' powers.

"He was the one who reduced their immunity. Many sultans are angry with him," Nazri told reporters after the launch of Lelaki Di Sebalik Pulau book today.

"This man has no principle. He has become a very unprincipled man since he left the government," he added.

"Better just ignore him," he added.