Why is it for Americans to decide about who are on US borders? Reciprocity is the major principle of foreign affairs. Let neighbors decide.
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When those “guests” can launch missiles that are only a short flight away from our country it is up to us to defend ourselves against that threat. If it looked like your neighbor was planning to roll a Howitzer cannon into his yard and direct it at your home (making for an undefensible situation) what would you do?
That’s a legit question unless I have my howitzer in his backyard aimed at his home before he did it.