Putin says US 'serious' about Greenland at Arctic conference / Deep processing industries to be created in the Arctic region -- Putin / Russia ready to Arctic projects with friendly countries -- Putin / Russia faces large-scale tasks in the Arctic region -- Putin / Delegates from 21 countries attend Arctic Forum activities -- presidential advisor / Russia, India ink five accords in Arctic cooperation sector / Russia, India cooperation in Arctic requires bigger scientific exchanges -- expert / Russia, US discussed possible joint projects in Arctic at talks in Riyadh -- head of RDIF / British forces ramps up Arctic training amid global tensions: Inside Operation Clockwork