A US aircraft carrier-led strike group is headed toward the Western Pacific Ocean near the Korean Peninsula, a US defense official confirmed to CNN.

The move of the Vinson strike group is in response to recent North Korean provocations, the official said.

Adm. Harry Harris, the commander of US Pacific Command, directed the USS Carl Vinson strike group to sail north to the Western Pacific after departing Singapore on Saturday, Pacific Command announced. The group had been scheduled to go to Australia.

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US and South Korea conduct military drills

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It is not uncommon for aircraft carriers to operate in that area, and the United States regularly deploys military assets, such as aircraft, to the region as a show of force. In fact, the Vinson was in South Korea last month for military exercises.

Just days ago, North Korea launched a Scud extended-range missile, which US officials said exploded in flight. The regime also has recently conducted several missile engine tests as it works to improve its ballistic missile technology.

In September, North Korea says it successfully tested a nuclear warhead. Pyongyang claims it is pursuing nuclear weapons to defend itself from what it calls US aggression.

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News of the carrier move comes just after a summit meeting between US President Trump and Chinese President Xi Jinping, where North Korea was one of the top items on the agenda.

“President Xi clearly understands, and – and I think agrees, that the situation has intensified and has reached a certain level of threat that action has to be taken,” US Secretary of State Rex Tillerson told CBS’ “Face the Nation” program on Sunday.

Trump’s national security adviser, H.R. McMaster, told Fox News on Sunday that it was “prudent” to move the strike group near the Korean Peninsula because “North Korea has been engaged in a pattern of provocative behavior.”

McMaster said on “Fox News Sunday” that Xi and Trump agreed in their meetings that “it is unacceptable” for North Korea to be nuclear-capable and the Korean Peninsula must be denuclearized.

Earlier this year, China called on both North Korea and the US to tone down tension on the Korean Peninsula – North Korea by suspending its nuclear weapons program and the US by stopping military exercises with South Korea that inflame Pyongyang.

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Experts: North Korea missile program advancing

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Days before the summit, Trump warned that the US was prepared to act unilaterally to stop North Korea’s nuclear program from advancing further should China be unwilling to use its leverage over Pyongyang.

But analysts say any unilateral military options for the US concerning North Korea posed significant problems.

While the US possesses overwhelming firepower compared to North Korea, an American strike on North Korea could expose South Korea to devastating casualties in retaliation, experts say.

Sailors spell out #USA with the American flag on the flight deck of the Nimitz-class aircraft carrier USS Theodore Roosevelt in the Persian Gulf in late June 2015. When the Roosevelt leaves the Gulf sometime in October, the U.S. Navy will be without a carrier in the important region for two months.

A MV-22B Osprey, from Marine Operational Test and Evaluation Squadron 1, lifts off from the flight deck of the aircraft carrier USS Carl Vinson (CVN 70) on June 12, 2016. Click through the gallery to see other US aircraft carriers.

Tug boats maneuver the aircraft carrier Pre-Commissioning Unit Gerald R. Ford (CVN 78) into the James River during the ship's turn ship evolution on June 11, 2016. This is a major milestone that brings the country's newest aircraft carrier another step closer to delivery and commissioning later this year.

The Nimitz-class aircraft carrier USS Ronald Reagan (CVN 76) arrives at the U.S. Navy base in Yokosuka, a suburb of Tokyo, Japan, on October 1, 2015. The Reagan is the fifth U.S. carrier forward deployed to Japan following USS George Washington (CVN 73), USS Kitty Hawk (CV 63), USS Independence (CV 62) and USS Midway (CV 41), according to the Navy.

The aircraft carrier USS Dwight D. Eisenhower (CVN 69) (Ike) transits through the Strait of Gibraltar into the Mediterranean Sea on June 13, 2016. Ike, the flagship of the Eisenhower Carrier Strike Group, is conducting naval operations in the U.S. 6th Fleet area of operations. It could be used to support operations against ISIS in the Mideast.

A rainbow forms over the bow of the Nimitz-class aircraft carrier USS John C. Stennis as the ship steams in the Pacific Ocean on February 3, 2015.

U.S. aircraft carrier classes —

U.S. Secretary of Defense Ash Carter (left) and Philippine Secretary of National Defense Voltaire Gazmin shake hands on a Marine Corps V-22 Osprey as they depart the the aircraft carrier USS John C. Stennis (CVN 74) after touring the aircraft carrier as it sailed in the South China Sea on April 15, 2016.

A photo illustration of the U.S. Navy's Gerald R. Ford-class aircraft carrier USS John F. Kennedy (CVN-79). The ship's keel laying ceremony was celebrated Saturday, August 22, 2015, in Newport News, Virginia. The ship is expected to replace the USS Nimitz (CVN-68), scheduled for inactivation in 2025, in the Navy fleet. The newest Kennedy will be the second carrier of that name. The first John F. Kennedy (CVA-67) was the last conventionally powered carrier. It was decommissioned in 2007.

The aircraft carrier USS Harry S. Truman (CVN 75) passes under the Friendship Bridge while transiting the Suez Canal on Dec. 14, 2015. The ship is conducting operations in the Persian Gulf, where Iran claims to have taken footage of the carrier using a drone. Click through the gallery for more images of U.S. Navy aircraft carriers.

Aviation Structural Mechanic Airman V. Sek, assigned to the "Jolly Rogers" of Strike Fighter Squadron (VFA) 103, applies a Christmas decal to an F/A-18F Super Hornet in the hangar bay of the Nimitz-class aircraft carrier USS Harry S. Truman in December 2015.

The Nimitz-class aircraft carrier USS George Washington (CVN 73) is seen from inside its sister ship, the USS Ronald Reagan (CVN 76), on August 7 off the coast of California as the two ships prepare for a "hull swap." Over 10 days in San Diego, much of the crew of each ship will transfer to the other. When completed, the Reagan will head to forward deployment in Japan, where the Washington had been. The Washington will head to Newport News, Virginia, for an overhaul.

Three Nimitz-class aircraft carriers USS Carl Vinson (CVN 70), top, USS Ronald Reagan (CVN 76), center, and USS John C. Stennis (CVN 74) are pierside at Naval Air Station North Island near San Diego on June 12, 2015. The Vinson has just recently returned from a 10-month deployment. The Reagan is preparing for a move to Japan later this year and the Stennis was making a port call after steaming from its homeport of Bremerton, Washington.

Sailors test the countermeasure washdown system on the flight deck of the Nimitz-class aircraft carrier USS Dwight D. Eisenhower (CVN 69) during sea trials prior to returning to its homeport at Naval Station Norfolk in late August 2015.

The aircraft carrier USS Theodore Roosevelt departs Naval Station Norfolk, Virginia, on Wednesday, March 11, for a scheduled deployment. The Nimitz-class carrier's departure was delayed for two days after marine growth clogged sea water intakes. Divers went into the 36-degree water to clean out the intakes and allow the ship to get under way. The cold water created a fog that made it seem the ship was in a cloud.

The USS Abraham Lincoln, a Nimitz-class aircraft carrier, is seen near the coast of Indonesia in 2005. The carrier recently received a new anchor from the decommissioned USS Enterprise.

Lightning strikes over the flight deck of the USS John C. Stennis, another Nimitz-class aircraft carrier, as the ship moves through the Persian Gulf in 2007. All of the Navy's 10 active aircraft carriers are from the Nimitz class, which started in 1975 with the commission of the USS Nimitz.

The USS Ranger (CV-61) arrives at Pearl Harbor, Hawaii, in 1993. The Forrestal-class carrier, which featured in the movie "Top Gun," is to be scrapped this year.

In this photo released by the U.S. Navy, a tugboat works alongside the decommissioned aircraft carrier USS Saratoga on Thursday, August 21, in Newport, Rhode Island. The Navy has paid a Texas recycling company a penny to dispose of the Saratoga, part of the Forrestal-class of "supercarrier" vessels built for the Atomic Age. The carrier was decommissioned 20 years ago.

Aircrew members are lifted from the flight deck of the USS John F. Kennedy during an exercise in 2002. The ship, which was decommissioned in 2007, was the only member of its class.

An F/A-18 Hornet launches from the USS Enterprise in 2007. The Enterprise, the world's first nuclear-powered aircraft carrier, was decommissioned in 2012. Like the John F. Kennedy, it was the only ship built in its class.

The Kitty Hawk class was named for the USS Kitty Hawk, seen here departing Yokosuka, Japan, in 2008. At that time, the Kitty Hawk was the oldest carrier in the U.S. Navy and the only conventional-power aircraft carrier still in commission. It was decommissioned in 2009.

The USS Independence, a member of the Forrestal class that preceded the Kitty Hawk class, heads up the East River in New York in 1959.

Helicopters sit on the flight deck of the USS Saipan during the mid-1950s. The ship was one of two members of the Saipan class.

The USS Midway, namesake of the Midway class of aircraft carriers, floats off the coast of North Vietnam in 1972. It was named after the Battle of Midway, when U.S. forces held back a Japanese attempt to take the Pacific atoll in 1942.

The USS Princeton, part of the Independence class, moves off the coast of Seattle in 1944.

The Essex-class USS Franklin burns after being hit by a Japanese dive bomber in 1945. The ship was named after Benjamin Franklin and nicknamed "Big Ben."

The USS Wasp burns in the Coral Sea after being struck by three torpedoes from a Japanese submarine in 1942. The ship, the only one of its class, would ultimately sink because of the damage.

B-25 bombers sit on the deck of the USS Hornet in the Pacific Ocean in 1942. The Hornet, one of three carriers in the Yorktown class, was the ship that launched the bombers flown by Air Force Lt. Col. James Doolittle and his pilots during an air raid in Tokyo four months after the attack on Pearl Harbor. It also was involved in the Battle of Midway.

Navy personnel work on board the USS Ranger circa 1942. The Ranger was the first ship to be designed and built specifically as an aircraft carrier. It was the only ship in its class.

There have actually been two aircraft carriers named after the Revolutionary War's Battle of Saratoga. The first USS Saratoga, seen here moving toward San Francisco's Golden Gate Bridge in 1945, was one of two members of the Lexington class of aircraft carriers.

The USS Langley, the Navy's first aircraft carrier and sole member of its class, steams off the coast of Baltimore in 1924.

US aircraft carriers

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Reuters first reported the move of the Vinson group.

The nuclear-powered, 97,000-ton Vinson, one of 10 active US aircraft carriers, has more than 60 aircraft and about 5,000 personnel. It is based in San Diego.

Sailing with the Vinson are the guided-missile destroyers USS Wayne E. Meyer and USS Michael Murphy and the guided-missile cruiser USS Lake Champlain, according to a statement from US Pacific Command.