Rule reminder
The field of 'dire' (to say/tell) is one of the richest in Italian: 'affermare' (to affirm/state — formal, assertive), 'dichiarare' (to declare, to officially state), 'sostenere' (to maintain/argue — you defend a position), 'asserire' (to assert — formal/written), 'ammettere' (to admit), 'riconoscere' (to acknowledge), 'aggiungere' (to add), 'precisare' (to specify/clarify), 'sottolineare' (to underline/emphasize), 'menzionare' (to mention), 'annunciare' (to announce). Each implies a different speech act.
Il ministro ha _____ che le nuove misure fiscali entreranno in vigore dal 1° gennaio.