They dont have to get un approval.You obviously haven't read the Chilcot Report then.
Clueless, so you are saying they got UN Security Council approval?
The Chilcot report is mainly critical of internal macinations of the uk govt, it does not form an opinion on the legality of going to war.
The ICC has no law to prosecute him under.
The vibe, lefty conspiracy theories and hot air dont cut it.