The chairman of the Senate Foreign Relations Committee says he will withhold consent for US arms sales to members of the Gulf Cooperation Council - until enough has been done to resolve the dispute between Qatar and its neighbours, which has resulted in an embargo on Qatar.Bob Corker says the diplomatic standoff among GCC countries is hurting efforts to fight ISIL and counter Iran.Al Jazeera's James Bays reports from Washington.- Subscribe to our channel: http://aje.io/AJSubscribe - Follow us on Twitter: https://twitter.com/AJEnglish - Find us on Facebook: https://www.facebook.com/aljazeera - Check our website: http://www.aljazeera.com/