PoliticsRocky relations: Angry Algeria suspends trade treaty with Spain over Western SaharaMadrid recognition of Morocco's autonomy plan for disputed territory sees Algiers target trade — but not gas supplies — between nationsTense: Polisario fighter sits on a rock at a forward base on the outskirts of Tifariti, Western SaharaPhoto: REUTERS/SCANPIXIain EsauLondon