Russia's president, Vladimir Putin, has arrived in North Korea, reports Russian media.
At the airport, he was met by North Korea's leader, Kim Jong-Un.
Putin arrived early on Wednesday, local time, and stepped into the country on a red carpet after shaking hands and embracing Kim Jong-Un. He then drove in a motorcade through the North Korean streets, which had been decorated with the Russian flag and large pictures of Putin ahead of the visit.
The two leaders last met when Kim visited Putin in Russia last autumn.
In an article published by the state-controlled North Korean news agency KCNA, Putin wrote that Pyongyang "firmly supports" Russia's invasion of Ukraine, and that North Korea has Russia's full support.
Earlier, Kremlin adviser Yuri Ushakov said that "important documents" would be signed during the meeting between the countries.
Vladimir Putin has visited North Korea once before, in 2000. At the time, he was relatively new to the presidency, and North Korea was ruled by the former leader Kim Jong-Il.
Russia's government has strengthened its contacts with North Korea alongside the ongoing invasion of Ukraine. Russia is reported to have received weapons from North Korea, which is said to be eager to obtain advanced military technology needed, among other things, for its nuclear programme.