Aleksandar Vucic, Serbia’s President congratulated Russian counterpart Vladimir Putin his 67th birthday and wished him “good health and personal happiness, as well as the strength, to continue to successfully represent Russia’s and the fraternal Russian nation's interests,” the Beta news agency reported on Monday.

In their phone conversation, the two leaders agreed to meet in Moscow before the end of the year to talk about the vital issues, especially about Kosovo.

Aleksandar Vucic, Serbia's President, said on Wednesday that his country and Russia had strategic and partner relations of mutual respect and understanding, the Beta news agency reported.

During a celebration of the Russian Day at Moscow's embassy in Belgrade, Vucic said that "every big day for Russia is equally big and important for Serbia."

He read the congratulatory note he sent to Russian President Vladimir Putin in which he said he was "sincerely happy for Russian achievements."

Serbian President Aleksandar Vucic met on Friday in Beijing with Russian President Vladimir Putin.

The two leaders are in China for the Belt and Road forum.

According to announcements coming from both sides before the meeting, the main topic was Kosovo.

At the start of their conversation, Putin said he was satisfied with economic cooperation between Russia and Serbia, and that he was glad he could discuss bilateral and regional issues with Vucic.

Foreign Ministers of Serbia and Russia, Ivica Dacic and Sergey Lavrov, will meet in Moscow on April 17, reports Belgrade based daily Vecernje Novosti, quoting Russian Ambassador to Belgrade Alexander Chepurin.

"Confidential contacts between foreign political authorities have become regular," Chepurin noted in his Twitter account. He added that Dacic and Lavrov "complement intensive and friendly dialogue at the highest level - between the leaders of Vladimir Putin and Aleksandar Vucic".

A meeting of President Aleksandar Vucic with representatives of the Kosovo Serbs was held in the Palace of Serbia. After the meeting, Vucic said in a press conference that he advised them to wait for talks in Berlin, where he will meet with German Chancellor Angela Merkel and French President Emmanuel Macron, reports Belgrade based news agency Beta.

"Apart from everything else, Pristina is doing some other things. They want to revoke the right of Serbs to an opinion," Vucic said.

Russian President Vladimir Putin has once again called for international law to be respected in order to avoid situations similar to the bombing of Yugoslavia.

Putin, who spoke during plenary session of the International Arctic Forum in St. Petersburg, referenced NATO's 1999 aerial war against the Federal Republic of Yugoslavia, i.e., Serbia and Montenegro.

Commenting on Serbia’s Foreign Minister Ivica Dacic statement that the demarcation with Pristina was Belgrade's official idea, Russia’s Foreign Ministry spokesperson Maria Zaharova said Moscow had not changed its policy towards Kosovo, the Beta news agency reported on Wednesday.

“Our position hasn't changed, “ she said, without elaborating.

Putin's visit to Belgrade is of political importance and should answer the question: is Serbia ready to be Moscow's key ally in the region, B92 portal reports, quoting Russian daily Kommersant.

If not, Serbia will continue its rapprochement with the EU and NATO, balancing between the West and Russia, assesses the Moscow daily.

Russian President Vladimir Putin will announce the position of Moscow on Kosovo in the course of the talks in Belgrade, reports the NSPM portal.

"This position is clear, consistent and based on international and legal frameworks, including those contained in UN Security Council Resolution 1244," said Yuriy Ushakov, Aide to the President of Russia Vladimir Putin.

Leaders of Montenegro's opposition Democratic Front Andrija Mandic and Milan Knezevic will attend the lunch that the Serbian President Aleksandar Vucic will organize for Vladimir Putin. The Russian president will arrive in Serbia on Thursday to a formal visit.