Play em as often as possible.
Afghanistan is a country that has gone to hell and back, and then to hell again. If their cricket team winning will bring some joy to the hearts of a bunch of people who've gone through some pretty tough times, then, well, speaking for myself I can stand the odd Tigers loss.
But play em. Send the transport bill to the CIA if you have to, but bring em out for one, three and four day games.Play em at the National Stadium, and play em in Syhelet. Invite them over next time Scotland or Zimbabwe or England or whoever is in country. Play em, and give them the opportunity to find if they can play cricket.