North Korean leader Kim Jong-un has arrived in Russia for a much-anticipated summit with the nation's president Vladimir Putin.
Mr. Kim left Pyongyang on his private train with top government and military officials, according to North Korea's state-run Korean Central News Agency.
Russian news agency Tass quoted a local official as saying Mr Kim was given flowers, bread and salt at the Hasan train station after crossing the border today.
Kremlin adviser Yuri Ushakov said: Preparations for the meeting in Vladivostok, Russia on the Pacific, were held in secrecy because of North Korean security concerns.
Mr Ushakov said he would seek to consolidate the positive trends stemming from US President Donald Trump's meetings with Mr Kim.
He wants to be the first North Korean leader, his late father, Kim Jong Il, visited in 2011.
Mr Kim has collapsed with Mr Trump, but the latest in Vietnam in February collapsed because North Korea wanted more.
Some experts say Mr. Kim could try to bolster his country's ties with Russia and China.
It is not clear how big of a role Russia can play in the effort to restart the nuclear diplomacy. But the summit could allow Mr Putin to try to increase his influence on regional politics and the standoff over North Korea's nuclear programs.
Mr Putin's adviser added that the Kremlin would try to help "create preconditions and a favorable atmosphere for reaching solid agreements on the problem of the Korean Peninsula".
He pointed to a Russia-China roadmap that offered a step-by-step approach to solving the nuclear standoff and calling for sanctions relief and security at Pyongyang.
Mr Ushakov said the Putin-Kim summit's agenda also wants to include bilateral cooperation.
He added that Russia's trade with North Korea is just 34 million dollars (£ 26.3m) last year, mostly because of the international sanctions against Pyongyang.
Agencies contributed to this report