Britain announced on Sunday it will increase tariffs on platinum and palladium imports from Russia and Belarus in a new package of sanctions targeting £1.7-billion ($2.10-billion) of trade, which it said aimed to further weaken Russian President Vladimir Putin’s war machine. Import tariffs on a range of products will be raised by 35 percentage points, Britain said, while it will also ban exports of goods such as chemicals, plastics, rubber and machinery to Russia, worth a combined £250-million ($310-million).