He issued an ultimatum: unless there was an early return, he would resign. (BNCI)
The central authorities issued an ultimatum demanding the withdrawal of the declaration of independence; when the Lithuanians refused to comply with this an economic blockade was imposed on 18 April. (BNCI)
On Saturday the news was that France and Britain had issued an ultimatum to Germany either to withdraw their troops or face war with France and Britain. (BNCI)