Whakakī i te rerenga e whai ake nei: I te tau 2014, i tohe a Kaine ko te whakauru hoia a US ki te Islamic State o Iraq me te Levant (ISIL) i whakahaeretia e Obama kaore i te ture kaore he whakaaetanga hou a te kaunihera mo te whakamahi i te kaha hoia ki ISIL. I te Whiringa-a-rangi 2014, i te Huihuinga Haumarutanga o te Ao o Halifax, Kaine me McCain i whakapā atu ki te hiahia o taua mana o te kaunihera, me te kii: "Kaore e taea e koe te whawhai me te kore o te Kaunihera. Kāore e taea e koe te tono i ngā tāngata kia whakararuraru i ō rātau oranga, kia whakamatea, kia kite i ētahi atu tāngata e whakamatea, e whara rānei mēnā kāore te Kaunihera i te pai ki te mahi i te mahi ki te whakatakoto i tō rātou tohu maihao ki tēnei mea, me te ki atu, he kaupapa ā-motu tēnei, ā, he mea tika". I muri i te Paenga-whāwhā
2017 Shayrat missile strike in Syria, ordered by Trump, Kaine said, "Kahore he take ture mo tenei. Kāore i tika kia mahia e ia i mua i tana taenga mai ki te Kaunihera". I runga i te "Meet the Press", ka mea a Kaine, "He tino kaitautoko ahau kia mahi te US ki te tiaki i nga take tangata, penei i te aukati i nga patu matū. Ko te mea e rerekē ana ahau i tēnei tari, ā, i mau ahau i te tūnga ōrite ki a Peresideni Obama, he iwi mātou e kore e tika kia whai mahi hōia, kia tīmata i te pakanga, ki te kore he mahere e whakaaturia ana, e whakaaetia ana e te Kaunihera".