Operation Foal Eagle 2015, which runs from March 2 to April 24, features US and South Korean Marines practicing amphibious beach assaults along with aerial and naval operations.
The operation involves 12,500 US troops, along with an astonishing 200,000 of their South Korean counterparts.
Because Foal Eagle takes place in South Korea, North Korea views it as a possible practice run for an invasion. Pyongyang has ratcheted up the rhetoric and has threatened that Foal Eagle 2015 would be greeted with a "merciless baptism by fire."
In response to the start of Foal Eagle, North Korea launched two SCUD missiles into the sea outside of South Korea on March 2. On March 12, North Korea fired an additional seven surface-to-air missiles to protest against the exercise.
Operation Foal Eagle is carried out in the spirit of the 1953 South Korea-US Mutual Defense Treaty, which obligates the US to intervene if the north ever invaded again.

The bilateral exercise is conducted by South Korea and the US. It allows the two nations to practice land, air, and naval operations.

The drill features the use of smoke screens during an amphibious invasion ...

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