Global National: March 18

Fears are mounting in Montreal that more may be missing following the fire at a heritage building earlier this week. Police are investigating, but due to safety concerns, they have yet to be able to enter the building to search.
Then, we take a look at the problems 3D-printed guns and gun components are creating for police in Canada.
Russian President Vladimir Putin visited Crimea on Saturday for the ninth anniversary of its annexation, even as he faces an arrest warrant by the International Criminal Court.
Plus, examining why protesters in Greece are blaming the government for the deadly train crash late last month as unrest continues.