Countries with Economies in Transition and Article 5 countries joining hands to meet their respective reduction targets for ozone-depleting HCFCs: Montreal Protocol focal points and refrigeration & air-conditioning (RAC) experts shared highlights, challenges and lessons learnt from the implementation of their respective HCFC phase-out strategies during the thematic meeting on the implementation of HCFC refrigerant management plans in Minsk, Belarus, 13-15 October 2015