You're going to have to be more specific on which war
The sea route along the north coast of Eurasia, at first known as the Northeast Passage and later called the Northern Sea Route, carries the largest volume of traffic of any Arctic seaway.
Source: https://www.britannica.com/place/Arctic/Transportation#:~:text=The%20sea%20route%20along%20the,traffic%20of%20any%20Arctic%20seaway.
The answer is foreign direct investment. Foreign direct investment (FDI) is an investment in a business by an investor from another country for which the foreign investor has control over the company purchased.
North! Back in 1967 that is
The president.
Hope this helped