Chief Inspector Andrew Allan, from Lothian and Borders Police spoke to our reporter Jenny Longden about why the raids were important.
As a result of today's raids in Galashiels, Kelso, Selkirk and Hawick, 11 people have been arrested.
Police relied on information from the public to target specific homes.
They seized street dealer amounts of Heroin and Valium, a cannabis cultivation and personal quantities of cannabis, as well as £3000.
More top news
19-year-old Ethan Stables, of Egerton Court in Barrow, has been charged with an offence under Section 58 of the Terrorism Act 2000.
Our run of disappointing weather continues - but for how long?
The Margaret Forster Room will be available for hire to the public and will be formally opened by author and broadcaster Hunter Davies.