China's salami slicing strategy involves claiming portions of the South China Sea over time.
The South China Sea is crucial for trade and economic security, with trillions of dollars worth of trade passing through annually.
The US has countered China by boosting its military presence and strengthening diplomatic relationships.
China's occupation of the South China Sea poses a threat to the sovereignty and economics of neighboring countries.
The US conducts freedom of navigation operations to challenge China's claims in the sea.