Muharram 4, 1330
May Allah bless your father! You have, indeed, dispelled my doubts and thus overcome my suspicion, so much so that truth has become manifest. Nothing remains to say other than the fact that the context of the said verse denotes the prohibition of taking the infidels for walis.
The verses which precede and succeed it testify to this fact, and this supports the claim that the connotation of the word "wali" in this verse is the supporter, loved one, friend, or the like; so, what would your answer be? Kindly state it, Wassalam.