LONDON: India and Pakistan are the world's newest known nuclear powers.

The two countries conducted back-to-back nuclear tests in 1998, but the exact number of warheads held by each side is not known.

The following are estimates supplied by Jane's Strategic Weapon Systems in London.

India	Pakistan
Estimated nuclear warheads: 100 to 150. 20 bombs deliverable by Jaguar or Mirage 2000 aircraft. Rest may be fitted to Agni or Prithvi missiles.	Estimated nuclear warheads: 25 to 50. 20 bombs deliverable by F-16 fighter jets. Rest may be fitted to Shaheen or Ghauri missiles.
Agni 1 (2,500 km/1,560 miles) Agni 2 (3,000 km/1,875 miles; upgraded, up to 3,500 km/2,190 miles) Prithvi SS-150 (150 km/94 miles) Prithvi SS-250 (250 km/156 miles)	Shaheen 1 (600 km/375 miles) Shaheen 2 (under development - up to 2,500 km/1,560 miles) Ghauri 1 (1,500 km/940 miles) Ghauri 2 (2,300 km/1,440 miles)