Joe Biden and fellow world leaders, huddled in the Bavarian Alps, will hear Monday from Ukrainian President Volodymyr Zelensky as they mull the next phase of his country's grinding war with Russia.
The conflict has been at the center of the Group of 7 summit being held inside a century-old mountainside castle in Germany's Bavaria region. Leaders have decided on new steps to isolate Russia's economy, including a ban on new imports of Russian gold, and are pledging support for Zelensky as his country suffers setbacks in the east.
"Here at this meeting of the G7, as well as at NATO, we will continue to do, collectively, everything we can to make sure that the Ukrainians have what they need in their hands to repel the Russian aggression," US Secretary of State Antony Blinken said in an exclusive interview with CNN's "State of the Union" on Sunday.
There are other important topics on the agenda, including a new effort to counter China's infrastructure investments in the developing world that have extended Beijing's influence across the globe.
But how much longer the Western front can remain united against Russia is the question looming over these talks. The rising cost of energy, fears of global food shortages and the certain inevitability that war fatigue will set in have lent urgency to the discussions about where the conflict goes next.
Meeting his host,German Chancellor Olaf Scholz, on Sunday, Biden sought to underscore the importance of sticking together.
"Putin has been counting on, from the beginning, that somehow NATO and the G7 would splinter," he said. "But we haven't, and we're not going to."
Zelensky, who is also planning to address this week's NATO summit in Madrid, has pressed the West for accelerated sanctions on Moscow and heavy artillery to beat back the Russian invaders.
His entreaties will become more urgent following Sunday's missile hits on two residential buildings in Kyiv, the Ukrainian capital that had enjoyed relative calm in recent weeks as the fighting moved eastward. Biden condemned the attack as "barbarism."
Yet how much further leaders will be willing to go in applying new sanctions on Russia remains to be seen. High oil prices mean Russia is making more revenue from its energy exports, despite bans in Europe and the United States. And high gas prices for US and European consumers are putting pressure on leaders to find ways to ease the pain.
Speaking to CNN's Jake Tapper on "State of the Union" hours after the Russian missiles hit Kyiv, British Prime Minister Boris Johnson urged Americans, Britons and others in the West to maintain resolve in punishing Moscow, despite the effect the war has had on global oil prices.
"I would just say to people in U.k