Explanation:

The strategic partnership model was proposed by the Dhirendra Singh Committee in July, 2015. It will help build a domestic defence manufacturing base. The policy will give a boost to the ‘Make in India’ policy in the defence sector and set Indian industry on the path to acquiring cutting-edge capabilities which will contribute to building of self-reliance in the vital sector.
The new model, which is a chapter under the Defence Procurement Procedure, has four segments —submarines, single-engine fighter aircraft, helicopters and armoured carriers/main battle tanks. Additional segments may be added in the future.