1 | Hundreds of thousands of people have been affected by e.g. the nerve gases Sarin and VX. | |
2 | It was the world's first major chemical attack using sarin, a nerve agent which attacks the respiratory system . | |
3 | When it was over, more than 5,000 people had been poisoned by sarin nerve gas, 12 died. | |
4 | He had studied viruses and genetic engineering at university and helped make the sarin gas. | |
5 | However, other gases (not least cyanide itself) could be used instead. |