Russian President Vladimir Putin on Sunday hosted Slovakia’s prime minister, Robert Fico, in a rare visit to the Kremlin by an EU leader since Moscow's all-out invasion of Ukraine in February 2022.

Fico arrived in Russia on a “working visit” and met with Putin one-on-one on Sunday evening, Kremlin spokesman Dmitry Peskov told Russia’s RIA agency. According to Peskov, the talks were expected to focus on “the international situation” and Russian natural gas deliveries.

Russian natural gas still flows to some European countries, including Slovakia, through Ukraine under a five-year agreement signed before the war that is due to expire at the end of this year. At a summit in Brussels on Thursday, Ukrainian President Volodymyr Zelenskyy told EU leaders that Kyiv has no intention of renewing the deal, something Fico insisted will harm his country's interests.

Slovakia last month signed a short-term pilot contract to buy natural gas from Azerbaijan, as it prepares for a possible halt to Russian supplies through Ukraine. Earlier this year, it struck a deal to import U.S. liquefied natural gas through a pipeline from Poland.

The country can also receive gas through Austrian, Hungarian and Czech networks, enabling imports from Germany among other potential suppliers.

Visits and phone calls from European leaders to Putin have been rare since Moscow sent troops into Ukraine, although Hungary’s PM Viktor Orbán visited Russia in July, and Austrian Chancellor Karl Nehammer met with the Russian leader just weeks into the full-scale war. Both trips drew condemnation from Kyiv and European leaders.

Orbán, widely seen as having the warmest relations with Putin among EU leaders, has routinely blocked, delayed or watered down EU efforts to assist Kyiv and impose sanctions on Moscow for its actions in Ukraine. He has long argued for a cessation of hostilities in Ukraine but without outlining what that might mean for the country’s territorial integrity or future security.

Fico’s views on Russia’s war on Ukraine differ sharply from most other European leaders. The Slovakian PM returned to power last year after his leftist party Smer (Direction) won parliamentary elections on a pro-Russia and anti-American platform. Since then, he has ended his country’s military aid for Ukraine, hit out at EU sanctions on Russia, and vowed to block Ukraine from joining NATO.

Fico has also been a rare senior EU politician to appear on Russian state TV following Moscow’s invasion of Ukraine. In an interview with the Rossiya-1 channel in October, he contended the West has “prolonged the war” by supporting Ukraine, adding that sanctions against Russia were ineffective. He declared that he was ready to negotiate with Putin.

He also vowed to attend a military parade in Moscow next May that will mark the 80th anniversary of Nazi Germany’s defeat in World War II. The Kremlin has used the annual “Victory Day” celebrations to tout its battlefield prowess, and Putin hailed Russian troops fighting in Ukraine as “heroes” at this year’s event.