The political turmoil following the dismissal of former Foreign Minister Tanaka is symbolic of this.
Literal
Tanaka former-foreign-minister [possessive-の] dismissal [to-に] continuing political-turmoil [subject-が] that symbol [copula-である].
更迭 (こうてつ, 'dismissal, replacement of an official') is precise political vocabulary. 田中前外相 ('former Foreign Minister Tanaka') packs title + name + status (前 = 'former'). に続く ('following, continuing from') chains events. 象徴 (しょうちょう, 'symbol') is the evaluative noun. である is the formal copula. Political news analysis prose.