Subsequent governments have failed to solve the problem.
prep.
2 subsequent to. after, following, succeeding, in the wake or aftermath of:
Further problems arose subsequent to their second term of office.
Advanced English Dictionary
+adjective (formal) happening after sth else: subsequent years / generations + Subsequent events confirmed our doubts. + Developments on this issue will be dealt with in a subsequent report.
Random quote: Things that were hard to bear are sweet to remember.: Seneca