BEIJING — Russian President Vladimir Putin and Chinese counterpart Xi Jinping expressed concern about rising tensions on the Korean peninsula after a North Korean missile test on Sunday, Putin’s spokesman said.

Meeting on the sidelines of an international forum in Beijing, Putin and Xi “discussed the situation on the Korean peninsula in detail” and “both parties expressed their concern over the escalation of tensions,” Kremlin spokesman Dmitry Peskov told reporters.

According to China’s official Xinhua news agency, Xi said during the meeting that Moscow and Beijing have played the role of a “ballast stone” in safeguarding regional and global peace and stability.

Xinhua did not publish other remarks.

Putin and Xi met after the opening ceremony of a summit on the Chinese president’s One Belt, One Road initiative — a massive global trade infrastructure project to connect China to Asian neighbors, Europe and Africa.

A TV news program shows a file image of North Korean leader Kim Jong Un at the Seoul Railway Station in Seoul, South Korea, Sunday, May 14, 2017. (AP Photo/Ahn Young-joon)

A TV news program shows a file image of North Korean leader Kim Jong Un at the Seoul Railway Station in Seoul, South Korea, Sunday, May 14, 2017. (AP Photo/Ahn Young-joon)

US President Donald Trump, meanwhile, called for tougher sanctions against North Korea following its apparent bid to test the South’s new liberal president and the US.

“Let this latest provocation serve as a call for all nations to implement far stronger sanctions against North Korea,” the White House said in a brief statement.

The missile flew more than 700 kilometers (435 miles) before landing in the Sea of Japan (East Sea), surrounded by the Korean peninsula, Japan and the Russian far east.

US President Donald Trump exits Marine One on the South Lawn of the White House on May 13, 2017. (AFP Photo/Olivier Douliery)

US President Donald Trump exits Marine One on the South Lawn of the White House on May 13, 2017. (AFP Photo/Olivier Douliery)

It impacted “so close to Russian soil … the president cannot imagine that Russia is pleased,” the White House said.

North Korea “has been a flagrant menace for far too long,” it said.

China, which has been under growing pressure from Washington to help rein in North Korea, called for restraint.

“All relevant parties should exercise restraint and refrain from further aggravating tensions in the region,” the foreign ministry said.

Multiple sets of UN and US sanctions against North Korea have done little to deter Pyongyang from pursuing its nuclear and missile ambitions.

Before the missile test, the US Treasury said it was considering “every tool in our arsenal” to cut off sources of international financing for illegal activities in the North.

Trump has threatened military action but recently appeared to have softened his stance, saying he would be “honored” to meet leader Kim Jong-Un under the right conditions.

New South Korean President Moon Jae-In, who was inaugurated on Wednesday, slammed the missile test as a “reckless provocation” after holding an emergency meeting with national security advisers.

He said the government strongly condemned this “grave challenge to the peace and security of the Korean peninsula and the international community,” his spokesman Yoon Young-Chan said.

‘Seeking leverage’

Moon, unlike his conservative predecessors, advocates reconciliation with Pyongyang but warned Sunday that dialogue would be possible “only if the North changes its attitude.”

Moon had said in his inauguration speech that he was willing to visit Pyongyang “in the right circumstances” to defuse tensions on the Korean peninsula.

South Korea's new President Moon Jae-In talks over the telephone with Chinese leader Xi Jinping at the presidential Blue House in Seoul on May 11, 2017. (AFP Photo/YONHAP /str)

South Korea’s new President Moon Jae-In talks over the telephone with Chinese leader Xi Jinping at the presidential Blue House in Seoul on May 11, 2017. (AFP Photo/YONHAP /str)

“The North is apparently trying to test Moon and see how his North Korea policy as well as policy coordination between the South and the US will take shape,” said Yang Moo-Jin, professor at the University of North Korea Studies in Seoul.

The launch was also aimed at “maximizing the North’s political leverage” ahead of possible negotiations with the US, as Pyongyang and Washington both recently signaled they were open to talks, he added.

“The North wants to show before negotiations that their precious, powerful weapon is not something they would give up so easily,” Yang said.

Moon and Washington have signaled an interest in negotiations to ease months of tensions.

Choe Son-Hui, a senior official at the North’s foreign ministry handling its US policy, also said Saturday the North would be willing to hold talks with the US if the conditions are right.

The missile test is likely to embarrass Beijing, which is hosting a summit Sunday to promote its ambitious global trade infrastructure project.

China, the isolated North’s sole major ally and economic lifeline, has been reluctant to exert pressure to upset the status quo in Pyongyang and risk an influx of refugees from its neighbor.

‘Fast progress’

The latest test was also the North’s first launch since a controversial US missile defense system deployed in the South became operational on May 2 and follows a failed April 29 ballistic missile test.

Japan's Prime Minister Shinzo Abe speaks to journalists at his official residence in Tokyo on May 14, 2017. (AFP Photo/JIJI Press/STR)

Japan’s Prime Minister Shinzo Abe speaks to journalists at his official residence in Tokyo on May 14, 2017. (AFP Photo/JIJI Press/STR)

Japanese Prime Minister Shinzo Abe slammed the latest missile launch as “totally unacceptable” and a “grave threat” to Tokyo.

A recent launch in March saw three North Korean missiles fall provocatively close to Japan, sparking alarm in Tokyo.

The North has staged two atomic tests and dozens of missile launches since the start of last year in its quest to develop a missile capable of delivering a nuclear warhead to the US mainland.

The US Pacific Command said Sunday’s launch did not appear to be an ICBM.

Yang said however it showed “fast progress” in Pyongyang’s missile capability.

The missile was fired from a site near the northwestern city of Kusong. A previous test at the same site in February sent a missile 500 kilometers, far less than Sunday’s launch.