President Vladimir Putin said on Thursday that Russia wants an end to the war in Ukraine and that this would inevitably involve a diplomatic solution.

Putin made the comments a day after U.S. President Joe Biden hosted Ukrainian President Volodymyr Zelenskiy in the White House and promised him continued and unwavering U.S. support.

"Our goal is not to spin the flywheel of military conflict, but, on the contrary, to end this war," Putin said. "We will strive for an end to this, and the sooner the better, of course."

White House spokesman John Kirby said Putin has "shown absolutely zero indication that he's willing to negotiate" an end to the war, which began when Moscow sent troops into Ukraine on Feb. 24.

"Quite the contrary," Kirby told reporters during an online briefing. "Everything he (Putin) is doing on the ground and in the air bespeaks a man who wants to continue to visit violence upon the Ukrainian people" and "escalate the war."

Kirby reiterated that Biden was open to talks with Putin, but only after the Russian leader "showed a seriousness about negotiations" and after consultations with Ukraine and U.S. allies.

Russia has persistently said it is open to negotiations, but Ukraine and its allies suspect a ploy to buy time after a series of Russian defeats and retreats that have swung the momentum of the 10-month war in favour of Kyiv.