Agni-II is an intermediate-range ballistic missile (IRBM) with a strike range of more than 2,000 km (actually 2,000-3,000 km), making it technically an ICBM by some definitions. Prithvi is a short-range ballistic missile (SRBM) with 150-350 km range. Trishul and Akash are surface-to-air missiles (SAMs), not ballistic missiles. Agni-II is part of India's deterrence capability and can strike deep into hostile territory, though true ICBMs (5,000+ km) like Agni-V came later.