Britney Spears fears for her two sons after receiving numerous death threats. Britney has decided not to take her sons with her to Russia during her European leg of her Circus tour. Spears was reportedly left shaken with numerous email threats.

more photos of Sean Preston and Jayden James below..

As reports by Female First: Britney’s sons: Sean Preston and Jayden James have been staying back in London with family members while Britney played her first show in St. Petersburg, Russia last Friday. Spears also decided against staying in the country herself. She spent the night in Finland and jetted in to St. Petersburg on Friday. Britney flies back to Moscow today to perform tonight before taking her private jet back to London to be reunited with her boys.

That’s too bad, St. Petersburg and Moscow are two places that I would love to visit.

photos: Britney’s beautiful sons with their papa, Kevin Federline

photos: Bauer Griffin