North Korea has already denounced both the United States attack on the Syrian air base and the dispatch of the strike group.
North Korean leader Kim Jong-un attends a meeting of the North's ruling Workers' Party of Korea in Pyongyang on February 15, 2017, to mark the 75th birthday of his late father Kim Jong-il. McMaster said, when asked why the Navy strike group Carl Vinson, whose flagship is a nuclear-powered aircraft carrier of that name, will make its way toward the Korean peninsula from Singapore as a show of force. The hermit state has launched several missile tests this year and most recently took issue with the US missile strike on an airbase in Syria last Friday. "It's very hard to know the effect of this on Kim Jong Un, but his elites will worry about a more aggressive USA policy".
Last week's strike against Syria was also designed as a stark warning against other rogue regimes, including North Korea's, Secretary of State Rex Tillerson said Sunday.
Defence sources said the deployment was in response to the new military developments in North Korea, which recently carried out several medium-range ballistic missile tests and test-fired new missile engines.
Pyongyang tested a liquid-fueled Scud missile this month.
He said South Korean troops are prepared to respond to any provocation by the Kim Jong-un regime in the next few days.
According to a Friday report by NBC, the US National Security Council has suggested to Trump and his advisors that nuclear weapons could be returned to South Korea, or that an assassination could be staged to take the life of North Korean leader Kim Jong-un.
Trump days before meeting Xi warned that the USA was prepared to act unilaterally to stop North Korea's nuclear advances should China be unwilling to use its leverage over Pyongyang.
Seoul and Washington are also conducting joint military drills, an annual exercise seen by North Korea as a practice for war.
The lead up to U.S. President Donald Trump and Chinese President Xi Jinping 's first meeting in Florida might have been tense but both leaders came away from last week's summit seemingly optimistic about the future of U.S.