Canada’s military has again delayed the opening of a major new Arctic port, a sign the government is struggling to assert sovereignty over a remote resource-rich region. The planned deep water naval facility at Nanisivik – some 3,100 km (1,900 miles) north of Ottawa – is one of the key components of Prime Minister Stephen Harper’s “use it or lose it” approach to the Arctic. The port, initially due to open in 2012, will now not be operational until 2018.