UNAT considered the appeal. UNAT held that the Appellant was estopped from challenging the lawfulness of the reassignment decision made in 2012 because his application to UNDT only challenged the decision to terminate his appointment in 2014. UNAT agreed with UNDT’s holding that there was no nexus between the reassignment and the abolition of the Appellant’s post. UNAT also agreed with UNDT’s finding that UNFPA fulfilled its duties towards the Appellant and had no obligation to place him on a new post. UNAT denied the Appellant’s request to overturn the impugned judgment on the sole ground of...