Security checks ahead of the G20 summit in Rome

Military police armed with assault rifles and sniffer dogs were patrolling the streets of Rome, as the Italian capital gears up for the Group of 20 (G-20) summit of world leaders on Saturday and Sunday.   

Several streets of the very heart of Rome will be closed as a security measure.   The leaders of the world's richest countries are expected to discuss topics like climate change and the digital global taxation on tech companies.