concerned with this offense. In this case, the court may not impose a punishment lower than the lowest threshold prescribed for this type of punishment in the General Part of this Code. 2. Based on the grounds specified in paragraph 1 of this Article, a court may decide not to impose an additional punishment, which is defined as a mandatory punishment by a sanction of an article in the Special Part of this Code. Article 70. Imposition of punishment for cumulative criminal offenses 1. In event of cumulative criminal offenses, a court, having determined the punishment (both primary and additional) for each offense, shall impose a final punishment by way of merging milder punishment into a havier one, or by way of full or partial adding up of imposed punishments. 2. In adding up punishments, the final cumulative punishment shall be within the limits prescribed by that sanction of an article in the Special Part of this Code, which provides for a heavier punishment. Where at least one of the criminal offences is an intentional grave or special grave offense, the court may impose a final cumulative punishment within the maximum term provided for this kind of punishment in the General Part of this Code. Where life imprisonment is imposed for at least one of the criminal offenses committed, the final cumulative punishment shall be determined by way of merging milder punishments into life imprisonment. 3. A primary cumulative punishment may be supplemented by additional punishments imposed by a court for criminal offenses of which a person was convicted. 4. A punishment shall be imposed under the rules set out in paragraphs 1 to 3 of this Article where, after a sentence in the case was passed, it is established that the sentenced person is guilty of yet another criminal offense committed before such previous sentence was passed. In this case, the punishment that has been fully or partially served under the previous sentence shall be merged into the term of the final punishment pursuant to the rules set out in Article 72 of this Code. Article 71. Imposition of punishment by cumulating sentences 1. Where a convicted person commits a new crime after the sentence was passed but before the full term has been served, a court shall, fully or partially supplement the new sentence with the unexpired term of the previous sentence. 2. In adding punishments through cumulation of sentences, the total term of punishment may not exceed the maximum term prescribed for this kind of punishment in the General Part of this Code. In cumulating punishments of imprisonment, the final term shall not exceed fifteen years, and where at least one of the offenses is a special grave offense, the total term may exceed fifteen years but should not exceed twenty five years. In cumulating punishments of life sentence or any milder punishments, the total term of the final punishment imposed through cumulation of sentences shall be determined by way of merging any milder punishments into life imprisonment. 3. Any additional punishment imposed at least in one of the sentences or an unserved term of any additional punishment under a previous sentence shall be added to the final primary punishment imposed through cumulation of sentences.