Complex sentence: The military said in a statement that the Shaheen IA is a medium-range ballistic missile (MRBM) which is an improved version of the Shaheen 1 with better accuracy and the range increased to 2500-3000km.
Split into simpler sentences: The military said in a statement that the Shaheen IA is a medium-range ballistic missile. It is an improved version of the Shaheen 1 with better accuracy and the range increased to 2500-3000km.