Saudi Arabia's economy is petroleum-based.
Oil accounts for 90% of the country's exports and nearly 75% of the government's revenues.
Force, Momentum and Time is being related by Newton's second law.
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In recent years, Russia has advanced its military capabilities in the Arctic, reopening old military bases that had been abandoned following the collapse of the Soviet Union in 1991, and bolstering the Russian Navy's prestigious Northern Fleet that oversees operations and defense in the region.
