に先立って => before; prior to ~ N2
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
~にしてはじめて      => since at ~ N1
せめて => at least; at most ~ N2
~をこめて => filled with; full of N2
を込めて => filled with; full of N2
をめぐって => concerning; in regard to ~ N2
てはだめだ => If... then not allowed... N3
Ban
~せめてもの => at least, at most N1
Compare
て(は)はじめて => not until; only after (first time) N3
てはだめだ => must not; may not; cannot N5
Ban
にめんして => having a space looking towards N N2
Situation, case