In another report by CNN, North Korea's new missiles and submarines were detailed despite China's disapproval.
"I have great confidence that China will properly deal with North Korea", he tweeted."If they are unable to do so, the US, with its allies, will!"
China banned all imports of North Korean coal on February 26 under United Nations sanctions, cutting off the North's most important export product.
A senior North Korean government official says the country is ready to stand up to any threat posed by the United States as he spoke at an huge parade celebrating the birthday of the country's founder Kim Il Sung, the grandfather of current ruler Kim Jong Un.
Several KN-08 missiles were rolled out on trucks at the parade.
That led North Korea to issue routine threats of attacks on its rivals if they show signs of aggression.
The parade may feature some of the country's most valuable military hardware, such as its prototype intercontinental ballistic missiles.
Choe Ryong Hae, who some presume as the second-most powerful official in North Korea, said Saturday that the new US government under Donald Trump was "creating a war situation" in the Korean Peninsula by dispatching strategic military assets to the region.
A North Korean missile exploded on launch a day after a massive military parade.
After a 21-gun salute, tens of thousands of soldiers, sailors and airmen goose-stepped through Kim Il-Sung Square turning their eyes towards the high balcony from where Kim watched, flanked by officers and officials.More news: Most Americans don't trust President Trump
"We're prepared to respond to an all-out war with an all-out war", North Korean military official Choe Ryong-Hae said, adding: "We are ready to hit back with nuclear attacks of our own style against any nuclear attacks".
Despite North Korea's provocations, USA officials have said that the US doesn't intend to use military force against North Korea in response to either a nuclear test or a missile launch.
Choe Ryong Hae said President Donald Trump was guilty of "creating a war situation" on the Korean Peninsula by dispatching US forces to the region.
"China is ready to coordinate closely with Russia to help cool down as quickly as possible the situation on the peninsula and encourage the parties concerned to resume dialogue", Wang told Lavrov, referring to the stalled six-party talks on the North's nuclear programme that includes Russia, China and the United States.
North Korea is technically still at war with South Korea and its ally the US, since the Korean War ended in a truce instead of a peace treaty.
"The Trump administration, which made a surprise guided cruise-missile strike on Syria on April 6, has entered the path of open threat and blackmail", KCNA quoted the military as saying in a statement.
Weapons analysts said there also appeared to be two new types of intercontinental ballistic missiles in canister launchers, but it remains unclear whether they have been tested.
Kim Jong Un, a 30-something leader who took power in late 2011 after the death of his father, Kim Jong Il, emphasizes nuclear weapons as the foundation of his national defense strategy.
Other senior officials joining Kim at the podium included Kim Won Hong, who the South Korean government had said earlier this year was sacked from his job as state security minister, presumably over corruption. South Korea has a spotty record of tracking developments in North Korea, as information about the secretive, authoritarian state is often impossible to confirm.
The nuclear-armed North is under United Nations sanctions over its weapons programmes, and has ambitions to build a rocket capable of delivering a warhead to the U.S. mainland -- something Trump has vowed "won't happen". USA satellite imagery suggests the country could conduct another underground nuclear test at any time. The North also a year ago launched a long-range rocket that put a satellite into orbit, which Washington, Seoul and others saw as a banned test of missile technology.