Balasore: Before the din that was kicked off after test firing of the much-touted Intercontinental Range Ballistic Missile (ICBM) Agni-V was settled down, India is gearing up to go for the maiden development trial of Agni-VI missile within next two years notwithstanding international reactions and pressures. Being developed by the DRDO, the new generation ICBM Agni-VI will have a strike range of 8,000 km to 10,000 km. A reliable source said that the drawing and designing work of the most advanced missile had been started. "It will be a three-stage missile and taller than the Agni-V. The design is just taking shape and other sub systems are under development. If everything goes as per the programme, the missile will be ready by mid 2014," said the source.