Mr. Sunak will also hold talks with Joe Biden, the US president. Narendra Modi, the Indian president. Fumio Kishida, the Japanese prime minister; Anthony Albanese, the Australian prime minister; and Prince Mohammed bin Salman, the crown prince of Saudi Arabia, who is also the country’s prime minister. It will be the first time Mr Sunak will meet with Mr Biden, on Ukraine, free trade, energy security and the Northern Ireland Protocol, all of which could include issues. Writing for the Telegraph, Mr Sunak outlined his tough stance on the Kremlin which will come under the spotlight during this week’s summit. Mr Sunak wrote: “We will not let our economic future be held hostage by the actions of a rogue state – and neither will our allies.” He also said of Putin: “Leaders take responsibility. They appear. However, at the G20 summit in Indonesia this week, one seat will remain vacant. “The man responsible for so much bloodshed in Ukraine and economic strife around the world will not be there to face his peers. He won’t even try to explain his actions. Instead, he will stay home and the rest of us will continue our duty. “Last week, we saw the Ukrainian flag once again raised over Kherson, just weeks after Putin declared that the city would be part of Russia forever. It is a historic milestone in Ukraine’s struggle to take back what is rightfully hers. “They stand for fundamental principles that matter to us all – the principles of sovereignty and self-determination, which are the very foundations of a stable international order. “But we know that the Ukrainian people are still suffering terribly under the ongoing Russian bombardment and prolonged blackouts in near-freezing temperatures. “That’s why when I spoke to Volodymyr Zelensky, the Ukrainian president, last Thursday, I made it clear that Britain will never back down when it comes to supporting the Ukrainian people in the face of this barbarity.”