London / AFP Security has been stepped up on the London Underground network, police said on Saturday, following the arrest of a 19-year-old man after a suspicious item was discovered on a Tube train. “The public will see more officers, including armed police, in and around transport hubs,” a Scotland Yard spokesman said. Armed police arrested the 19-year-old in London …

  Moscow / AFP Nineteen people died when a helicopter carrying oil and gas field workers crashed in a remote area of Siberia in bad weather, Russian investigators said on Saturday. The Mi-8 helicopter carrying 22 people including three crew crashed on Friday night in the far-northern Yamalo-Nenetsky region some 2,400 kilometres (1,500 miles) northeast of Moscow, investigators said. Photos …

  Moscow / AFP Moscow on Saturday escalated a row over its attempts to send observers to the US presidential polls, accusing Washington of adopting an “anti-Russian” stance. Moscow has said that it is trying to send its own observers to various US states to monitor the November 8 vote, but has been refused accreditation so far. Deputy foreign minister …