the man has made it clear that it will never to the terroris

give in 是“让步”的意思give away 有“赠送”的意思这里是跟【恐怖分子的威胁】扯上关系的,用“赠送”不怎么通吧,所以是give inThe man has made it clear that it will never (give in) to the terrorist's threats。这个男人已经明确了他的立场也就是从不给恐怖分子的威胁让步。