South Korea's President Moon and Putin share an understanding on North Korea


But South Korean officials say the next launches could be conducted at angles close to operational as the North would seek to test whether the warheads survive the harsh conditions of atmospheric re-entry and detonate properly.

But he continued to present the threat of strikes as an option, if not the most desirable one. "And each day new equipment is delivered - new and lovely equipment - the best in the world, the best anywhere in the world", he added. "If we do use it on North Korea, it will be a very sad day for North Korea".

"Military action would certainly be an option", Trump told a White House news conference when he was asked about the possibility after meeting the leader of Kuwait. "It would be great if something else could be worked out".

"We decisively condemned North Korea's launch of a medium-range ballistic missile that flew over Japan's territory on August 28, as well as the new nuclear tests conducted on September 3", Putin said in a statement.

The White House said Trump and Turnbull "confirmed that their two countries will intensify joint efforts to denuclearize North Korea".

Instead, Russia, along with China, has advocated a "freeze for freeze" plan, under which the United States and South Korea would stop major military exercises in exchange for North Korea halting its weapons programmes.

The administration official played down the significance of Trump not ruling out the possibility of a nuclear North Korea, saying it runs counter to his past views on the issue.

Jose strengthens into hurricane in Atlantic Ocean
And while it could possibly move to the north, east and south, it will likely move "very little overall", AccuWeather said. But even after Irma runs its course, the threat of tropical cyclone formation in the Atlantic Basin will continue.

With the remarks, the Russian leader effectively rejected Moon's demands that Moscow ban crude oil supply to the North and imports of North Korean labor, which serves as an important source of funds for the Kim Jong-un regime of the North.

The 29-nation US -led alliance expressed full solidarity with Japan and South Korea, North Korea's neighbors.

The official spoke more bluntly, telling reporters "it's not the time to negotiate with North Korea".

Putin is at a watershed moment where he will have to modify his North Korea strategy and go with the global community. But since then he's stepped back from that type of bellicose language. However, the main provider of the North's oil, China, is likely to oppose such a restriction in the U.N. Security Council, where it wields a veto as it fears a regime collapse on its border. "Hopefully we're not going to have to use it on North Korea".

Trump is due to deliver his first major address to the United Nations in two weeks.

"The amount of pressure North Korea has been under is less than pressure applied to Iran and Iraq", the official said.

North Korea conducted its fifth nuclear test on September 9 previous year, and then carried out a sixth a week ago, saying it was a hydrogen bomb that could be fitted onto a missile - prompting global condemnation and calls for further sanctions. "We would have to look at all of the details, all of the facts", Trump added. "Certainly that's not a first choice, but we'll see what happens". Xi also said that China attaches importance to Trump's visit to China later this year. "I believe that President Xi agrees with me 100%", Trump said from the South Lawn as he prepared to board Marine One.