Russian rockets slammed Grozny, capital of separatist Chechnya, Monday night as Moscow tightened its grip on the breakaway republic, while hundreds of thousands of Chechen villagers lined roadways and linked arms in a peaceful protest against advancing Russian troops. Chechen President Dzhokhar Dudayev said 120 people died in the missile attack and denounced Russia for the "mass killing of peaceful citizens." Chechen radio said the Russian attacks targeted residential areas and administrative buildings. A Russian government statement acknowledged the worsening situation in Grozny but blamed Dudayev, saying he's holding his own people hostage. Meanwhile, Russia closed its borders with Georgia and Azerbaijan to limit Chechen supply routes and troop movements.