Russia's President Vladimir Putin greets Brunei's Sultan Hassanal Bolkiah during a ceremony to welcome Southeast Asian leaders and heads of delegations participating in the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Alexander NEMENOV / AFP via Getty Images)

Russia's President Vladimir Putin hosts a ceremony to welcome Southeast Asian leaders and heads of delegations participating in the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Alexander NEMENOV / AFP via Getty Images)

Brunei's Sultan Hassanal Bolkiah attends a meeting with Russia's President on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)

Brunei's Sultan Hassanal Bolkiah attends a meeting with Russia's President on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)

Brunei's Sultan Hassanal Bolkiah attends a meeting with Russia's President on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)

Russia's President Vladimir Putin and Brunei's Sultan Hassanal Bolkiah arrive for a meeting on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)

Russia's President Vladimir Putin arrives for a meeting with Brunei's Sultan on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)

Russia's President Vladimir Putin attends a meeting with Brunei's Sultan on the sidelines of the Russia-ASEAN summit, which commemorates 35 years of collaboration between Russia and the ASEAN countries, in the central Russian city of Kazan, around 700 kilometres (435 miles) east of the capital Moscow, on June 17, 2026. (Photo by Anastasia Barashkova / POOL / AFP via Getty Images)