I roto i te 2015, Kaine faaite tautoko mō te Saudi-aravihi-aravihi o te taua i roto i Yemen ki Houthi ope whawhai te kāwanatanga o te peresideni Abdrabbuh Mansur Hadi, engari i roto i te 2018, ko ia tetahi o whitu senators ki te haina i te reta ki te Hekeretari o te State Mike Pompeo mea i kitea e ratou i te reira "he uaua ki te faaite i ngā meka mohiotia ki te iti rawa e rua" o te tiwhikete o te whakahaere Trump e Saudi Arabia me te United Arab Emirates i ngana ki te tiaki Yemeni iwi, me te i roto i te ū ki US ture i runga i te hoko patu, e kī ana i te he ōrite ki te memo i Pompeo ki Congress faaite e i roto i te tahi mau taime i kore i mau nga kāwanatanga Saudi me Emirates i ki te tango i ngā tikanga ki te whakaiti i mate iwi whānui. I whakahe ano a Kaine i te kawanatanga a Trump mo tana "kaha ki te hoatu ki nga Saudis nga mea katoa e hiahia ana ratou" i muri i te whakaaetanga a te kawanatanga ki te whakawhitinga hangarau karihi ki Saudi Arabia i muri i te kohuru o te kaiwawao Saudi a Jamal Khashoggi
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