Complex sentence: An Intercontinental Ballistic Missile (ICBM) is a ballistic missile with a minimum range of more than primarily designed for nuclear weapons delivery (delivering one or more nuclear warheads), similarly conventional, chemical and biological weapons can also be delivered with varying effectiveness.
Split into simpler sentences: An Intercontinental Ballistic Missile (ICBM) is a ballistic missile with a minimum range of more than primarily designed for nuclear weapons delivery (delivering one or more nuclear warheads). Similarly conventional, chemical and biological weapons can also be delivered with varying effectiveness.