award winning american journalist bret renan was killed by russian troops in irpin. he was 50 years old. and a worrying development from the chernobyl nuclear site, the iaea there says staff there who have been unable to leave or stop working since the invasion began are so tired they ve stopped doing repairs and maintenance of safety-related equipment. we want to go straight to scott mclain in the city of lviv, lviv taken its first hits from russian troops as the russian military focuses new attacks on the western part of ukraine, what is the latest from where you are? reporter: hey, pam. for the last two weeks, air raid sirens have been going off in lviv daily or almost daily and lately, it seems that people barely even notice. they continue to go about their business because this city still very much feels like a safe-haven in the west, there are hundreds of thousands of