Can iRule be used to perform exception of IPI category based on Geolocation

My bad. Else condition is rejecting all traffic. Try below and I would suggest try on non-prod VIP first.

when HTTP_REQUEST { 
    set ip_reputation_categories [IP::reputation [IP::client_addr]]
    if {([$ip_reputation_categories contains "Spam Sources"]) and (!([[whereis [IP::client_addr] country] equals "NP"]))} {
	log local0. "IP from spam sources block: [IP::client_addr]"
	drop
	} else {
	#DO NOTHING
	}
  }