Simply Obvious : Because they were assembled in India.
The Spice 2000 bombs that were used in Balakot air strike by the Indian Air Force on February 26, 2019, to avenge the Pulwama attack were made in Hyde
timesofindia.indiatimes.com
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Also per the ASPI the balakot strikes were a precise miss
Ever since the stunning US success in the 1991 Gulf War, we have increasingly come to take precision bombing for granted. While militaries may sometimes misidentify a target, we assume that they can precisely hit ...
www.aspistrategist.org.au
But India’s recent air strike on a purported Jaish-e-Mohammad terrorist camp in Balakot in Pakistan on 26 February suggests that precision strike is still an art and science that requires both practice and enabling systems to achieve the intended effect. Simply buying precision munitions off the shelf is not enough.
The weapon can be both GPS- and electro-optically guided. A 2,000-pound bomb causes substantial
damage to structures.
Controversy has raged over whether India hit its intended targets. The Indian narrative has insisted that the strikes did hit their targets, ‘killing a
large number of terrorists’. Indian Air Chief Marshal B.S. Dhanoa
remarked, ‘If we plan to hit the target, we hit the target.’
The Indian narrative has also suggested that the strike used a SPICE 2000 variant with a reduced amount of explosive and the ability to penetrate through several floors of a building and even underground before detonating. This argument claims that such a weapon would only create a small entry hole and, while it would kill all occupants, it wouldn’t destroy the target building.
However, publicly available imagery acquired by European Space Imaging the day after the strike suggests that buildings at the camp were not visibly damaged or destroyed (see image below). This imagery, which is of a higher resolution than that available previously, shows conspicuously undamaged roofs that are not consistent with either a SPICE 2000 strike or a strike with other munitions. We believe that even a weapon with reduced explosive fill would cause damage to buildings that would be identifiable in the satellite imagery.