(even though many try to reconcile, it's a mismatch in the most key way: )
A 'pro life' view that aligns to the teachings to us from Christ includes:
38 “You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’
39 But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also.
40 And if anyone would sue you and take your tunic, let him have your cloak as well.
41 And if anyone forces you to go one mile, go with him two miles.
42 Give to the one who begs from you, and do not refuse the one who would borrow from you.
43“You have heard that it was said, ‘You shall love your neighbor and hate your enemy.’
44 But I say to you, Love your enemies and pray for those who persecute you..."
As you can see, a nation cannot be a believer in Christ, cannot act as an individual person.
A nation does what is un-Christian, by it's very nature. (much of the time; a nation could only do a Christian action occasionally)
Or all nations will continue to remain unChristian, and kill,
until He returns and becomes the King, literally with us in person.