Being slightly cynical, I doubt wether they were given any options, and the grenades may have been delivered. More the Russians doing some house cleaning and sealing their southern border.
IIRC the area has been a regular supply and transit route for those wishing to join any of the various islamic military groups. I think they'll now find the door hermetically sealed.....
Sky News: IS-Linked Militants 'Neutralised' In Russia
Russia's counter-terrorism agency reportedly kills 11 extremists as Moscow calls for greater co-operation in the fight against IS.
11:56, UK, Sunday 22 November 2015
Eleven militants who had sworn allegiance to Islamic State have been "neutralised" in a special operation in a southern Russian republic, according to reports.
The operation took place in a wooded area outside the city of Nalchik in the Kabardino-Balkaria region, which lies within Russia's volatile North Caucuses region, the news agency AFP reported, citing the TASS news agency.
The fighters opened fire on law enforcement officials and threw grenades after they were cornered, TASS quoted a statement from Russia's national anti-terrorism committee as saying.
"They were all members of armed groups that had sworn allegiance to the international terrorist organisation ISIL," the committee said.
Islamists in the predominately Muslim North Caucuses have been flocking to join Islamic State since it declared a wilayaat, or province, in the region.......