The US president, Joe Biden, has announced an $800m (£610m) package of arms to Ukraine as the west steps up military aid against invading Russia forces. The west's military assistance to Ukraine began cautiously with helmets and flak jackets but now includes drones that can destroy Russian tanks and artillery from 50 miles away. The west has repeatedly refused to enforce a no-fly zone over Ukraine but is now supplying a range of powerful weapons. They... (GunPolicy.org)