CAIRO - Yemeni foreign minister Riyadh Yasseen called on Tuesday for an Arab ground intervention in the country 'as soon as possible'. Asked by an interviewer on pan-Arab television channel al-Arabiya Hadath whether he sought an Arab ground intervention, Yaseen responded: 'Yes, we are asking for that, and as soon as possible, in order to save our infrastructure and save Yemenis under siege in many cities.' For six days, a Saudi-led coalition has bombed Iran-allied Houthi fighters and army units fighting against President Abd-Rabbu Mansour Hadi, whose last bastion in the southern city of Aden was heavily shelled overnight.