"I don't know where my children are," Ganna Galnychenko says in a quivering voice. "I can't reach them by phone.". Tears stream down the cheeks of the 64-year-old Ukrainian pensioner as explosives are tied under the belly of the last bridge standing between advancing Russian soldiers and Kyiv. The Ukrainian capital's fronts are shrinking and its streets are growing more and more dangerous and deserted by the day. Some of the city's residents - almost uniformly defiant but increasingly grim-faced - waste no time in preparing for guerrilla warfare. Auto repair shop owner and former host of Ukraine's most popular weekly TV show about cars had now converted his sprawling garage into an underground weapons manufacturing centre aimed at adding some muscle to Ukraine's vastly outgunned volunteer units. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES