Evian-les-Bains: US allies at the Group of Seven summit of major industrialised democracies worked Tuesday to push the war in Ukraine back up the agenda of President Donald Trump after more than four years of fighting sparked by Russia's full-scale invasion.

The Iran conflict has in recent weeks overshadowed Ukraine but following his announcement of an agreement to end the 3 1/2-month-old conflict in the Gulf, Trump said he now wants to focus on Ukraine. Ukrainian President Volodymyr Zelenskyy joined G7 leaders for a morning working session.

Talks wrapped quickly, as leaders gathered for just 75 minutes. According to a French diplomat familiar with the talks, G7 leaders, including Trump, agreed to increase pressure on Russia, notably through sanctions targeting its oil and natural gas sectors. The diplomat, who spoke on condition of anonymity on ongoing talks in Evian, said G7 leaders held a "very fruitful" conversation on Ukraine.

Leaders also agreed on a common position to support Ukraine by providing additional air defence capabilities and other means of protection, the diplomat said. As the US under Trump has cut back aid to Ukraine, France and its European allies are now the biggest providers of military and financial support to Kyiv.

In the French spa town close to the Swiss border, Trump downplayed the impact of the Russia-Ukraine war on the US but lamented the death toll.

"The whole thing is ridiculous," Trump said. "So, yeah, I'm going to do whatever I can."