At least 794 Witnesses have been criminally charged in Russia for their faith, and 128 are currently serving prison sentences.
The war in Ukraine has triggered the deepest crisis in Russia's relations with the West since the 1962 Cuban Missile Crisis.
Henry's resignation comes as regional Caribbean leaders met in Jamaica to discuss the framework for a political transition.
Kenya offered to lead the force last year, but a court ruled it needed a reciprocal agreement from Haiti.
Special police units were deployed throughout Port-au-Prince and national police trade union said four officers had been killed, including a...