US aircraft carrier arrives in South Korea as Kim Jong Un and Putin talk

US nuclear-powered aircraft carrier USS Ronald Reagan is escorted as it arrives in Busan, South Korea (Kang Duck-chul/Yonhap via AP)

A US nuclear-powered aircraft carrier arrived in South Korea on Thursday in a demonstration of strength against North Korea.

The USS Ronald Reagan and its battle group came to the southeastern South Korean port of Busan after participating in a trilateral South Korean-US-Japanese maritime exercise earlier this week, the South Korean defence ministry said.