Another Rio Arts Heist!

The Russian Mafia is having a real busman's holiday in Rio de Janeiro. This time they hit the Rio City Museum - no alarm system! no video cameras! - and stole 11 treasures dating from Brazil's empire era, including an ivory sabre and a pearl and silver foil. Same modus operandi as the previous heist: burst in waving guns and disarm the startled security guards. A doddle. See you next week, Ivan.
Coxsoft Art has asked before and will ask again: Who are the incompetent twerps guarding the world's art treasures? It's name 'n' shame time, folks: museum director Heloisa Queiroz.