Qatari intelligence had infiltrated the Yemeni government and the offices of Hadi and was leaking information about the Arab coalition to Iran, now that is perceived as abuse of friendship and even an act of conspiring with a perceived enemy state, namely Iran, that is how serious it is,,
stated reasons from these 4 countries are bunch of pure bs. Qatar had been funding terror goup as saudis since years now. Since, Qatar did not toe saudi line, it is being made an outcast. But still Oman, Kuwait did not say anything. Nonetheless, both Qatari and Saudis are involved in terror funding and sponsorship.