Qatar has vowed it will not surrender its foreign policy in a row with other Arab states over its alleged connections to extremism. <br/><br/>Foreign Minister Sheikh Mohammed bin Abdulrahman al-Thani said he favoured diplomacy to resolve the escalating crisis and that there is no military solution. Qatar rejects claims it is a leading supporter of Islamist extremism. <br/><br/>Qatar's Al Jazeera network said it is suffering a cyber-attack. The network has been in the crosshairs in the current dispute, and other Gulf countries blocked it in late last month. <br/><br/>On its website, Al Jazeera said its services are all still working but the attacks are gaining intensity and taking various forms.<br/><br/>Meanwhile, Qatar's state-run TV station later said it is shutting down its website temporarily because of hacking attempts.